/*!
 * Vue.js v2.6.12
 * (c) 2014-2020 Evan You
 * Released under the MIT License.
 */
(function(global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
		typeof define === 'function' && define.amd ? define(factory) :
		(global = global || self, global.Vue = factory());
}(this, function() {
	'use strict';

	/*  */

	var emptyObject = Object.freeze({});

	// These helpers produce better VM code in JS engines due to their
	// explicitness and function inlining.
	function isUndef(v) {
		return v === undefined || v === null
	}

	function isDef(v) {
		return v !== undefined && v !== null
	}

	function isTrue(v) {
		return v === true
	}

	function isFalse(v) {
		return v === false
	}

	/**
	 * Check if value is primitive.
	 */
	function isPrimitive(value) {
		return(
			typeof value === 'string' ||
			typeof value === 'number' ||
			// $flow-disable-line
			typeof value === 'symbol' ||
			typeof value === 'boolean'
		)
	}

	/**
	 * Quick object check - this is primarily used to tell
	 * Objects from primitive values when we know the value
	 * is a JSON-compliant type.
	 */
	function isObject(obj) {
		return obj !== null && typeof obj === 'object'
	}

	/**
	 * Get the raw type string of a value, e.g., [object Object].
	 */
	var _toString = Object.prototype.toString;

	function toRawType(value) {
		return _toString.call(value).slice(8, -1)
	}

	/**
	 * Strict object type check. Only returns true
	 * for plain JavaScript objects.
	 */
	function isPlainObject(obj) {
		return _toString.call(obj) === '[object Object]'
	}

	function isRegExp(v) {
		return _toString.call(v) === '[object RegExp]'
	}

	/**
	 * Check if val is a valid array index.
	 */
	function isValidArrayIndex(val) {
		var n = parseFloat(String(val));
		return n >= 0 && Math.floor(n) === n && isFinite(val)
	}

	function isPromise(val) {
		return(
			isDef(val) &&
			typeof val.then === 'function' &&
			typeof val.catch === 'function'
		)
	}

	/**
	 * Convert a value to a string that is actually rendered.
	 */
	function toString(val) {
		return val == null ?
			'' :
			Array.isArray(val) || (isPlainObject(val) && val.toString === _toString) ?
			JSON.stringify(val, null, 2) :
			String(val)
	}

	/**
	 * Convert an input value to a number for persistence.
	 * If the conversion fails, return original string.
	 */
	function toNumber(val) {
		var n = parseFloat(val);
		return isNaN(n) ? val : n
	}

	/**
	 * Make a map and return a function for checking if a key
	 * is in that map.
	 */
	function makeMap(
		str,
		expectsLowerCase
	) {
		var map = Object.create(null);
		var list = str.split(',');
		for(var i = 0; i < list.length; i++) {
			map[list[i]] = true;
		}
		return expectsLowerCase ?
			function(val) {
				return map[val.toLowerCase()];
			} :
			function(val) {
				return map[val];
			}
	}

	/**
	 * Check if a tag is a built-in tag.
	 */
	var isBuiltInTag = makeMap('slot,component', true);

	/**
	 * Check if an attribute is a reserved attribute.
	 */
	var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');

	/**
	 * Remove an item from an array.
	 */
	function remove(arr, item) {
		if(arr.length) {
			var index = arr.indexOf(item);
			if(index > -1) {
				return arr.splice(index, 1)
			}
		}
	}

	/**
	 * Check whether an object has the property.
	 */
	var hasOwnProperty = Object.prototype.hasOwnProperty;

	function hasOwn(obj, key) {
		return hasOwnProperty.call(obj, key)
	}

	/**
	 * Create a cached version of a pure function.
	 */
	function cached(fn) {
		var cache = Object.create(null);
		return(function cachedFn(str) {
			var hit = cache[str];
			return hit || (cache[str] = fn(str))
		})
	}

	/**
	 * Camelize a hyphen-delimited string.
	 */
	var camelizeRE = /-(\w)/g;
	var camelize = cached(function(str) {
		return str.replace(camelizeRE, function(_, c) {
			return c ? c.toUpperCase() : '';
		})
	});

	/**
	 * Capitalize a string.
	 */
	var capitalize = cached(function(str) {
		return str.charAt(0).toUpperCase() + str.slice(1)
	});

	/**
	 * Hyphenate a camelCase string.
	 */
	var hyphenateRE = /\B([A-Z])/g;
	var hyphenate = cached(function(str) {
		return str.replace(hyphenateRE, '-$1').toLowerCase()
	});

	/**
	 * Simple bind polyfill for environments that do not support it,
	 * e.g., PhantomJS 1.x. Technically, we don't need this anymore
	 * since native bind is now performant enough in most browsers.
	 * But removing it would mean breaking code that was able to run in
	 * PhantomJS 1.x, so this must be kept for backward compatibility.
	 */

	/* istanbul ignore next */
	function polyfillBind(fn, ctx) {
		function boundFn(a) {
			var l = arguments.length;
			return l ?
				l > 1 ?
				fn.apply(ctx, arguments) :
				fn.call(ctx, a) :
				fn.call(ctx)
		}

		boundFn._length = fn.length;
		return boundFn
	}

	function nativeBind(fn, ctx) {
		return fn.bind(ctx)
	}

	var bind = Function.prototype.bind ?
		nativeBind :
		polyfillBind;

	/**
	 * Convert an Array-like object to a real Array.
	 */
	function toArray(list, start) {
		start = start || 0;
		var i = list.length - start;
		var ret = new Array(i);
		while(i--) {
			ret[i] = list[i + start];
		}
		return ret
	}

	/**
	 * Mix properties into target object.
	 */
	function extend(to, _from) {
		for(var key in _from) {
			to[key] = _from[key];
		}
		return to
	}

	/**
	 * Merge an Array of Objects into a single Object.
	 */
	function toObject(arr) {
		var res = {};
		for(var i = 0; i < arr.length; i++) {
			if(arr[i]) {
				extend(res, arr[i]);
			}
		}
		return res
	}

	/* eslint-disable no-unused-vars */

	/**
	 * Perform no operation.
	 * Stubbing args to make Flow happy without leaving useless transpiled code
	 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
	 */
	function noop(a, b, c) {}

	/**
	 * Always return false.
	 */
	var no = function(a, b, c) {
		return false;
	};

	/* eslint-enable no-unused-vars */

	/**
	 * Return the same value.
	 */
	var identity = function(_) {
		return _;
	};

	/**
	 * Generate a string containing static keys from compiler modules.
	 */
	function genStaticKeys(modules) {
		return modules.reduce(function(keys, m) {
			return keys.concat(m.staticKeys || [])
		}, []).join(',')
	}

	/**
	 * Check if two values are loosely equal - that is,
	 * if they are plain objects, do they have the same shape?
	 */
	function looseEqual(a, b) {
		if(a === b) {
			return true
		}
		var isObjectA = isObject(a);
		var isObjectB = isObject(b);
		if(isObjectA && isObjectB) {
			try {
				var isArrayA = Array.isArray(a);
				var isArrayB = Array.isArray(b);
				if(isArrayA && isArrayB) {
					return a.length === b.length && a.every(function(e, i) {
						return looseEqual(e, b[i])
					})
				} else if(a instanceof Date && b instanceof Date) {
					return a.getTime() === b.getTime()
				} else if(!isArrayA && !isArrayB) {
					var keysA = Object.keys(a);
					var keysB = Object.keys(b);
					return keysA.length === keysB.length && keysA.every(function(key) {
						return looseEqual(a[key], b[key])
					})
				} else {
					/* istanbul ignore next */
					return false
				}
			} catch(e) {
				/* istanbul ignore next */
				return false
			}
		} else if(!isObjectA && !isObjectB) {
			return String(a) === String(b)
		} else {
			return false
		}
	}

	/**
	 * Return the first index at which a loosely equal value can be
	 * found in the array (if value is a plain object, the array must
	 * contain an object of the same shape), or -1 if it is not present.
	 */
	function looseIndexOf(arr, val) {
		for(var i = 0; i < arr.length; i++) {
			if(looseEqual(arr[i], val)) {
				return i
			}
		}
		return -1
	}

	/**
	 * Ensure a function is called only once.
	 */
	function once(fn) {
		var called = false;
		return function() {
			if(!called) {
				called = true;
				fn.apply(this, arguments);
			}
		}
	}

	var SSR_ATTR = 'data-server-rendered';

	var ASSET_TYPES = [
		'component',
		'directive',
		'filter'
	];

	var LIFECYCLE_HOOKS = [
		'beforeCreate',
		'created',
		'beforeMount',
		'mounted',
		'beforeUpdate',
		'updated',
		'beforeDestroy',
		'destroyed',
		'activated',
		'deactivated',
		'errorCaptured',
		'serverPrefetch'
	];

	/*  */

	var config = ({
		/**
		 * Option merge strategies (used in core/util/options)
		 */
		// $flow-disable-line
		optionMergeStrategies: Object.create(null),

		/**
		 * Whether to suppress warnings.
		 */
		silent: false,

		/**
		 * Show production mode tip message on boot?
		 */
		productionTip: "development" !== 'production',

		/**
		 * Whether to enable devtools
		 */
		devtools: "development" !== 'production',

		/**
		 * Whether to record perf
		 */
		performance: false,

		/**
		 * Error handler for watcher errors
		 */
		errorHandler: null,

		/**
		 * Warn handler for watcher warns
		 */
		warnHandler: null,

		/**
		 * Ignore certain custom elements
		 */
		ignoredElements: [],

		/**
		 * Custom user key aliases for v-on
		 */
		// $flow-disable-line
		keyCodes: Object.create(null),

		/**
		 * Check if a tag is reserved so that it cannot be registered as a
		 * component. This is platform-dependent and may be overwritten.
		 */
		isReservedTag: no,

		/**
		 * Check if an attribute is reserved so that it cannot be used as a component
		 * prop. This is platform-dependent and may be overwritten.
		 */
		isReservedAttr: no,

		/**
		 * Check if a tag is an unknown element.
		 * Platform-dependent.
		 */
		isUnknownElement: no,

		/**
		 * Get the namespace of an element
		 */
		getTagNamespace: noop,

		/**
		 * Parse the real tag name for the specific platform.
		 */
		parsePlatformTagName: identity,

		/**
		 * Check if an attribute must be bound using property, e.g. value
		 * Platform-dependent.
		 */
		mustUseProp: no,

		/**
		 * Perform updates asynchronously. Intended to be used by Vue Test Utils
		 * This will significantly reduce performance if set to false.
		 */
		async: true,

		/**
		 * Exposed for legacy reasons
		 */
		_lifecycleHooks: LIFECYCLE_HOOKS
	});

	/*  */

	/**
	 * unicode letters used for parsing html tags, component names and property paths.
	 * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
	 * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
	 */
	var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;

	/**
	 * Check if a string starts with $ or _
	 */
	function isReserved(str) {
		var c = (str + '').charCodeAt(0);
		return c === 0x24 || c === 0x5F
	}

	/**
	 * Define a property.
	 */
	function def(obj, key, val, enumerable) {
		Object.defineProperty(obj, key, {
			value: val,
			enumerable: !!enumerable,
			writable: true,
			configurable: true
		});
	}

	/**
	 * Parse simple path.
	 */
	var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]"));

	function parsePath(path) {
		if(bailRE.test(path)) {
			return
		}
		var segments = path.split('.');
		return function(obj) {
			for(var i = 0; i < segments.length; i++) {
				if(!obj) {
					return
				}
				obj = obj[segments[i]];
			}
			return obj
		}
	}

	/*  */

	// can we use __proto__?
	var hasProto = '__proto__' in {};

	// Browser environment sniffing
	var inBrowser = typeof window !== 'undefined';
	var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
	var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
	var UA = inBrowser && window.navigator.userAgent.toLowerCase();
	var isIE = UA && /msie|trident/.test(UA);
	var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
	var isEdge = UA && UA.indexOf('edge/') > 0;
	var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
	var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
	var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
	var isPhantomJS = UA && /phantomjs/.test(UA);
	var isFF = UA && UA.match(/firefox\/(\d+)/);

	// Firefox has a "watch" function on Object.prototype...
	var nativeWatch = ({}).watch;

	var supportsPassive = false;
	if(inBrowser) {
		try {
			var opts = {};
			Object.defineProperty(opts, 'passive', ({
				get: function get() {
					/* istanbul ignore next */
					supportsPassive = true;
				}
			})); // https://github.com/facebook/flow/issues/285
			window.addEventListener('test-passive', null, opts);
		} catch(e) {}
	}

	// this needs to be lazy-evaled because vue may be required before
	// vue-server-renderer can set VUE_ENV
	var _isServer;
	var isServerRendering = function() {
		if(_isServer === undefined) {
			/* istanbul ignore if */
			if(!inBrowser && !inWeex && typeof global !== 'undefined') {
				// detect presence of vue-server-renderer and avoid
				// Webpack shimming the process
				_isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
			} else {
				_isServer = false;
			}
		}
		return _isServer
	};

	// detect devtools
	var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;

	/* istanbul ignore next */
	function isNative(Ctor) {
		return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
	}

	var hasSymbol =
		typeof Symbol !== 'undefined' && isNative(Symbol) &&
		typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);

	var _Set;
	/* istanbul ignore if */ // $flow-disable-line
	if(typeof Set !== 'undefined' && isNative(Set)) {
		// use native Set when available.
		_Set = Set;
	} else {
		// a non-standard Set polyfill that only works with primitive keys.
		_Set = /*@__PURE__*/ (function() {
			function Set() {
				this.set = Object.create(null);
			}
			Set.prototype.has = function has(key) {
				return this.set[key] === true
			};
			Set.prototype.add = function add(key) {
				this.set[key] = true;
			};
			Set.prototype.clear = function clear() {
				this.set = Object.create(null);
			};

			return Set;
		}());
	}

	/*  */

	var warn = noop;
	var tip = noop;
	var generateComponentTrace = (noop); // work around flow check
	var formatComponentName = (noop);

	{
		var hasConsole = typeof console !== 'undefined';
		var classifyRE = /(?:^|[-_])(\w)/g;
		var classify = function(str) {
			return str
				.replace(classifyRE, function(c) {
					return c.toUpperCase();
				})
				.replace(/[-_]/g, '');
		};

		warn = function(msg, vm) {
			var trace = vm ? generateComponentTrace(vm) : '';

			if(config.warnHandler) {
				config.warnHandler.call(null, msg, vm, trace);
			} else if(hasConsole && (!config.silent)) {
				console.error(("[Vue warn]: " + msg + trace));
			}
		};

		tip = function(msg, vm) {
			if(hasConsole && (!config.silent)) {
				console.warn("[Vue tip]: " + msg + (
					vm ? generateComponentTrace(vm) : ''
				));
			}
		};

		formatComponentName = function(vm, includeFile) {
			if(vm.$root === vm) {
				return '<Root>'
			}
			var options = typeof vm === 'function' && vm.cid != null ?
				vm.options :
				vm._isVue ?
				vm.$options || vm.constructor.options :
				vm;
			var name = options.name || options._componentTag;
			var file = options.__file;
			if(!name && file) {
				var match = file.match(/([^/\\]+)\.vue$/);
				name = match && match[1];
			}

			return(
				(name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
				(file && includeFile !== false ? (" at " + file) : '')
			)
		};

		var repeat = function(str, n) {
			var res = '';
			while(n) {
				if(n % 2 === 1) {
					res += str;
				}
				if(n > 1) {
					str += str;
				}
				n >>= 1;
			}
			return res
		};

		generateComponentTrace = function(vm) {
			if(vm._isVue && vm.$parent) {
				var tree = [];
				var currentRecursiveSequence = 0;
				while(vm) {
					if(tree.length > 0) {
						var last = tree[tree.length - 1];
						if(last.constructor === vm.constructor) {
							currentRecursiveSequence++;
							vm = vm.$parent;
							continue
						} else if(currentRecursiveSequence > 0) {
							tree[tree.length - 1] = [last, currentRecursiveSequence];
							currentRecursiveSequence = 0;
						}
					}
					tree.push(vm);
					vm = vm.$parent;
				}
				return '\n\nfound in\n\n' + tree
					.map(function(vm, i) {
						return("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm) ?
							((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)") :
							formatComponentName(vm)));
					})
					.join('\n')
			} else {
				return("\n\n(found in " + (formatComponentName(vm)) + ")")
			}
		};
	}

	/*  */

	var uid = 0;

	/**
	 * A dep is an observable that can have multiple
	 * directives subscribing to it.
	 */
	var Dep = function Dep() {
		this.id = uid++;
		this.subs = [];
	};

	Dep.prototype.addSub = function addSub(sub) {
		this.subs.push(sub);
	};

	Dep.prototype.removeSub = function removeSub(sub) {
		remove(this.subs, sub);
	};

	Dep.prototype.depend = function depend() {
		if(Dep.target) {
			Dep.target.addDep(this);
		}
	};

	Dep.prototype.notify = function notify() {
		// stabilize the subscriber list first
		var subs = this.subs.slice();
		if(!config.async) {
			// subs aren't sorted in scheduler if not running async
			// we need to sort them now to make sure they fire in correct
			// order
			subs.sort(function(a, b) {
				return a.id - b.id;
			});
		}
		for(var i = 0, l = subs.length; i < l; i++) {
			subs[i].update();
		}
	};

	// The current target watcher being evaluated.
	// This is globally unique because only one watcher
	// can be evaluated at a time.
	Dep.target = null;
	var targetStack = [];

	function pushTarget(target) {
		targetStack.push(target);
		Dep.target = target;
	}

	function popTarget() {
		targetStack.pop();
		Dep.target = targetStack[targetStack.length - 1];
	}

	/*  */

	var VNode = function VNode(
		tag,
		data,
		children,
		text,
		elm,
		context,
		componentOptions,
		asyncFactory
	) {
		this.tag = tag;
		this.data = data;
		this.children = children;
		this.text = text;
		this.elm = elm;
		this.ns = undefined;
		this.context = context;
		this.fnContext = undefined;
		this.fnOptions = undefined;
		this.fnScopeId = undefined;
		this.key = data && data.key;
		this.componentOptions = componentOptions;
		this.componentInstance = undefined;
		this.parent = undefined;
		this.raw = false;
		this.isStatic = false;
		this.isRootInsert = true;
		this.isComment = false;
		this.isCloned = false;
		this.isOnce = false;
		this.asyncFactory = asyncFactory;
		this.asyncMeta = undefined;
		this.isAsyncPlaceholder = false;
	};

	var prototypeAccessors = {
		child: {
			configurable: true
		}
	};

	// DEPRECATED: alias for componentInstance for backwards compat.
	/* istanbul ignore next */
	prototypeAccessors.child.get = function() {
		return this.componentInstance
	};

	Object.defineProperties(VNode.prototype, prototypeAccessors);

	var createEmptyVNode = function(text) {
		if(text === void 0) text = '';

		var node = new VNode();
		node.text = text;
		node.isComment = true;
		return node
	};

	function createTextVNode(val) {
		return new VNode(undefined, undefined, undefined, String(val))
	}

	// optimized shallow clone
	// used for static nodes and slot nodes because they may be reused across
	// multiple renders, cloning them avoids errors when DOM manipulations rely
	// on their elm reference.
	function cloneVNode(vnode) {
		var cloned = new VNode(
			vnode.tag,
			vnode.data,
			// #7975
			// clone children array to avoid mutating original in case of cloning
			// a child.
			vnode.children && vnode.children.slice(),
			vnode.text,
			vnode.elm,
			vnode.context,
			vnode.componentOptions,
			vnode.asyncFactory
		);
		cloned.ns = vnode.ns;
		cloned.isStatic = vnode.isStatic;
		cloned.key = vnode.key;
		cloned.isComment = vnode.isComment;
		cloned.fnContext = vnode.fnContext;
		cloned.fnOptions = vnode.fnOptions;
		cloned.fnScopeId = vnode.fnScopeId;
		cloned.asyncMeta = vnode.asyncMeta;
		cloned.isCloned = true;
		return cloned
	}

	/*
	 * not type checking this file because flow doesn't play well with
	 * dynamically accessing methods on Array prototype
	 */

	var arrayProto = Array.prototype;
	var arrayMethods = Object.create(arrayProto);

	var methodsToPatch = [
		'push',
		'pop',
		'shift',
		'unshift',
		'splice',
		'sort',
		'reverse'
	];

	/**
	 * Intercept mutating methods and emit events
	 */
	methodsToPatch.forEach(function(method) {
		// cache original method
		var original = arrayProto[method];
		def(arrayMethods, method, function mutator() {
			var args = [],
				len = arguments.length;
			while(len--) args[len] = arguments[len];

			var result = original.apply(this, args);
			var ob = this.__ob__;
			var inserted;
			switch(method) {
				case 'push':
				case 'unshift':
					inserted = args;
					break
				case 'splice':
					inserted = args.slice(2);
					break
			}
			if(inserted) {
				ob.observeArray(inserted);
			}
			// notify change
			ob.dep.notify();
			return result
		});
	});

	/*  */

	var arrayKeys = Object.getOwnPropertyNames(arrayMethods);

	/**
	 * In some cases we may want to disable observation inside a component's
	 * update computation.
	 */
	var shouldObserve = true;

	function toggleObserving(value) {
		shouldObserve = value;
	}

	/**
	 * Observer class that is attached to each observed
	 * object. Once attached, the observer converts the target
	 * object's property keys into getter/setters that
	 * collect dependencies and dispatch updates.
	 */
	var Observer = function Observer(value) {
		this.value = value;
		this.dep = new Dep();
		this.vmCount = 0;
		def(value, '__ob__', this);
		if(Array.isArray(value)) {
			if(hasProto) {
				protoAugment(value, arrayMethods);
			} else {
				copyAugment(value, arrayMethods, arrayKeys);
			}
			this.observeArray(value);
		} else {
			this.walk(value);
		}
	};

	/**
	 * Walk through all properties and convert them into
	 * getter/setters. This method should only be called when
	 * value type is Object.
	 */
	Observer.prototype.walk = function walk(obj) {
		var keys = Object.keys(obj);
		for(var i = 0; i < keys.length; i++) {
			defineReactive$$1(obj, keys[i]);
		}
	};

	/**
	 * Observe a list of Array items.
	 */
	Observer.prototype.observeArray = function observeArray(items) {
		for(var i = 0, l = items.length; i < l; i++) {
			observe(items[i]);
		}
	};

	// helpers

	/**
	 * Augment a target Object or Array by intercepting
	 * the prototype chain using __proto__
	 */
	function protoAugment(target, src) {
		/* eslint-disable no-proto */
		target.__proto__ = src;
		/* eslint-enable no-proto */
	}

	/**
	 * Augment a target Object or Array by defining
	 * hidden properties.
	 */
	/* istanbul ignore next */
	function copyAugment(target, src, keys) {
		for(var i = 0, l = keys.length; i < l; i++) {
			var key = keys[i];
			def(target, key, src[key]);
		}
	}

	/**
	 * Attempt to create an observer instance for a value,
	 * returns the new observer if successfully observed,
	 * or the existing observer if the value already has one.
	 */
	function observe(value, asRootData) {
		if(!isObject(value) || value instanceof VNode) {
			return
		}
		var ob;
		if(hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
			ob = value.__ob__;
		} else if(
			shouldObserve &&
			!isServerRendering() &&
			(Array.isArray(value) || isPlainObject(value)) &&
			Object.isExtensible(value) &&
			!value._isVue
		) {
			ob = new Observer(value);
		}
		if(asRootData && ob) {
			ob.vmCount++;
		}
		return ob
	}

	/**
	 * Define a reactive property on an Object.
	 */
	function defineReactive$$1(
		obj,
		key,
		val,
		customSetter,
		shallow
	) {
		var dep = new Dep();

		var property = Object.getOwnPropertyDescriptor(obj, key);
		if(property && property.configurable === false) {
			return
		}

		// cater for pre-defined getter/setters
		var getter = property && property.get;
		var setter = property && property.set;
		if((!getter || setter) && arguments.length === 2) {
			val = obj[key];
		}

		var childOb = !shallow && observe(val);
		Object.defineProperty(obj, key, {
			enumerable: true,
			configurable: true,
			get: function reactiveGetter() {
				var value = getter ? getter.call(obj) : val;
				if(Dep.target) {
					dep.depend();
					if(childOb) {
						childOb.dep.depend();
						if(Array.isArray(value)) {
							dependArray(value);
						}
					}
				}
				return value
			},
			set: function reactiveSetter(newVal) {
				var value = getter ? getter.call(obj) : val;
				/* eslint-disable no-self-compare */
				if(newVal === value || (newVal !== newVal && value !== value)) {
					return
				}
				/* eslint-enable no-self-compare */
				if(customSetter) {
					customSetter();
				}
				// #7981: for accessor properties without setter
				if(getter && !setter) {
					return
				}
				if(setter) {
					setter.call(obj, newVal);
				} else {
					val = newVal;
				}
				childOb = !shallow && observe(newVal);
				dep.notify();
			}
		});
	}

	/**
	 * Set a property on an object. Adds the new property and
	 * triggers change notification if the property doesn't
	 * already exist.
	 */
	function set(target, key, val) {
		if(isUndef(target) || isPrimitive(target)) {
			warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
		}
		if(Array.isArray(target) && isValidArrayIndex(key)) {
			target.length = Math.max(target.length, key);
			target.splice(key, 1, val);
			return val
		}
		if(key in target && !(key in Object.prototype)) {
			target[key] = val;
			return val
		}
		var ob = (target).__ob__;
		if(target._isVue || (ob && ob.vmCount)) {
			warn(
				'Avoid adding reactive properties to a Vue instance or its root $data ' +
				'at runtime - declare it upfront in the data option.'
			);
			return val
		}
		if(!ob) {
			target[key] = val;
			return val
		}
		defineReactive$$1(ob.value, key, val);
		ob.dep.notify();
		return val
	}

	/**
	 * Delete a property and trigger change if necessary.
	 */
	function del(target, key) {
		if(isUndef(target) || isPrimitive(target)) {
			warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
		}
		if(Array.isArray(target) && isValidArrayIndex(key)) {
			target.splice(key, 1);
			return
		}
		var ob = (target).__ob__;
		if(target._isVue || (ob && ob.vmCount)) {
			warn(
				'Avoid deleting properties on a Vue instance or its root $data ' +
				'- just set it to null.'
			);
			return
		}
		if(!hasOwn(target, key)) {
			return
		}
		delete target[key];
		if(!ob) {
			return
		}
		ob.dep.notify();
	}

	/**
	 * Collect dependencies on array elements when the array is touched, since
	 * we cannot intercept array element access like property getters.
	 */
	function dependArray(value) {
		for(var e = (void 0), i = 0, l = value.length; i < l; i++) {
			e = value[i];
			e && e.__ob__ && e.__ob__.dep.depend();
			if(Array.isArray(e)) {
				dependArray(e);
			}
		}
	}

	/*  */

	/**
	 * Option overwriting strategies are functions that handle
	 * how to merge a parent option value and a child option
	 * value into the final value.
	 */
	var strats = config.optionMergeStrategies;

	/**
	 * Options with restrictions
	 */
	{
		strats.el = strats.propsData = function(parent, child, vm, key) {
			if(!vm) {
				warn(
					"option \"" + key + "\" can only be used during instance " +
					'creation with the `new` keyword.'
				);
			}
			return defaultStrat(parent, child)
		};
	}

	/**
	 * Helper that recursively merges two data objects together.
	 */
	function mergeData(to, from) {
		if(!from) {
			return to
		}
		var key, toVal, fromVal;

		var keys = hasSymbol ?
			Reflect.ownKeys(from) :
			Object.keys(from);

		for(var i = 0; i < keys.length; i++) {
			key = keys[i];
			// in case the object is already observed...
			if(key === '__ob__') {
				continue
			}
			toVal = to[key];
			fromVal = from[key];
			if(!hasOwn(to, key)) {
				set(to, key, fromVal);
			} else if(
				toVal !== fromVal &&
				isPlainObject(toVal) &&
				isPlainObject(fromVal)
			) {
				mergeData(toVal, fromVal);
			}
		}
		return to
	}

	/**
	 * Data
	 */
	function mergeDataOrFn(
		parentVal,
		childVal,
		vm
	) {
		if(!vm) {
			// in a Vue.extend merge, both should be functions
			if(!childVal) {
				return parentVal
			}
			if(!parentVal) {
				return childVal
			}
			// when parentVal & childVal are both present,
			// we need to return a function that returns the
			// merged result of both functions... no need to
			// check if parentVal is a function here because
			// it has to be a function to pass previous merges.
			return function mergedDataFn() {
				return mergeData(
					typeof childVal === 'function' ? childVal.call(this, this) : childVal,
					typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
				)
			}
		} else {
			return function mergedInstanceDataFn() {
				// instance merge
				var instanceData = typeof childVal === 'function' ?
					childVal.call(vm, vm) :
					childVal;
				var defaultData = typeof parentVal === 'function' ?
					parentVal.call(vm, vm) :
					parentVal;
				if(instanceData) {
					return mergeData(instanceData, defaultData)
				} else {
					return defaultData
				}
			}
		}
	}

	strats.data = function(
		parentVal,
		childVal,
		vm
	) {
		if(!vm) {
			if(childVal && typeof childVal !== 'function') {
				warn(
					'The "data" option should be a function ' +
					'that returns a per-instance value in component ' +
					'definitions.',
					vm
				);

				return parentVal
			}
			return mergeDataOrFn(parentVal, childVal)
		}

		return mergeDataOrFn(parentVal, childVal, vm)
	};

	/**
	 * Hooks and props are merged as arrays.
	 */
	function mergeHook(
		parentVal,
		childVal
	) {
		var res = childVal ?
			parentVal ?
			parentVal.concat(childVal) :
			Array.isArray(childVal) ?
			childVal :
			[childVal] :
			parentVal;
		return res ?
			dedupeHooks(res) :
			res
	}

	function dedupeHooks(hooks) {
		var res = [];
		for(var i = 0; i < hooks.length; i++) {
			if(res.indexOf(hooks[i]) === -1) {
				res.push(hooks[i]);
			}
		}
		return res
	}

	LIFECYCLE_HOOKS.forEach(function(hook) {
		strats[hook] = mergeHook;
	});

	/**
	 * Assets
	 *
	 * When a vm is present (instance creation), we need to do
	 * a three-way merge between constructor options, instance
	 * options and parent options.
	 */
	function mergeAssets(
		parentVal,
		childVal,
		vm,
		key
	) {
		var res = Object.create(parentVal || null);
		if(childVal) {
			assertObjectType(key, childVal, vm);
			return extend(res, childVal)
		} else {
			return res
		}
	}

	ASSET_TYPES.forEach(function(type) {
		strats[type + 's'] = mergeAssets;
	});

	/**
	 * Watchers.
	 *
	 * Watchers hashes should not overwrite one
	 * another, so we merge them as arrays.
	 */
	strats.watch = function(
		parentVal,
		childVal,
		vm,
		key
	) {
		// work around Firefox's Object.prototype.watch...
		if(parentVal === nativeWatch) {
			parentVal = undefined;
		}
		if(childVal === nativeWatch) {
			childVal = undefined;
		}
		/* istanbul ignore if */
		if(!childVal) {
			return Object.create(parentVal || null)
		} {
			assertObjectType(key, childVal, vm);
		}
		if(!parentVal) {
			return childVal
		}
		var ret = {};
		extend(ret, parentVal);
		for(var key$1 in childVal) {
			var parent = ret[key$1];
			var child = childVal[key$1];
			if(parent && !Array.isArray(parent)) {
				parent = [parent];
			}
			ret[key$1] = parent ?
				parent.concat(child) :
				Array.isArray(child) ? child : [child];
		}
		return ret
	};

	/**
	 * Other object hashes.
	 */
	strats.props =
		strats.methods =
		strats.inject =
		strats.computed = function(
			parentVal,
			childVal,
			vm,
			key
		) {
			if(childVal && "development" !== 'production') {
				assertObjectType(key, childVal, vm);
			}
			if(!parentVal) {
				return childVal
			}
			var ret = Object.create(null);
			extend(ret, parentVal);
			if(childVal) {
				extend(ret, childVal);
			}
			return ret
		};
	strats.provide = mergeDataOrFn;

	/**
	 * Default strategy.
	 */
	var defaultStrat = function(parentVal, childVal) {
		return childVal === undefined ?
			parentVal :
			childVal
	};

	/**
	 * Validate component names
	 */
	function checkComponents(options) {
		for(var key in options.components) {
			validateComponentName(key);
		}
	}

	function validateComponentName(name) {
		if(!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) {
			warn(
				'Invalid component name: "' + name + '". Component names ' +
				'should conform to valid custom element name in html5 specification.'
			);
		}
		if(isBuiltInTag(name) || config.isReservedTag(name)) {
			warn(
				'Do not use built-in or reserved HTML elements as component ' +
				'id: ' + name
			);
		}
	}

	/**
	 * Ensure all props option syntax are normalized into the
	 * Object-based format.
	 */
	function normalizeProps(options, vm) {
		var props = options.props;
		if(!props) {
			return
		}
		var res = {};
		var i, val, name;
		if(Array.isArray(props)) {
			i = props.length;
			while(i--) {
				val = props[i];
				if(typeof val === 'string') {
					name = camelize(val);
					res[name] = {
						type: null
					};
				} else {
					warn('props must be strings when using array syntax.');
				}
			}
		} else if(isPlainObject(props)) {
			for(var key in props) {
				val = props[key];
				name = camelize(key);
				res[name] = isPlainObject(val) ?
					val :
					{
						type: val
					};
			}
		} else {
			warn(
				"Invalid value for option \"props\": expected an Array or an Object, " +
				"but got " + (toRawType(props)) + ".",
				vm
			);
		}
		options.props = res;
	}

	/**
	 * Normalize all injections into Object-based format
	 */
	function normalizeInject(options, vm) {
		var inject = options.inject;
		if(!inject) {
			return
		}
		var normalized = options.inject = {};
		if(Array.isArray(inject)) {
			for(var i = 0; i < inject.length; i++) {
				normalized[inject[i]] = {
					from: inject[i]
				};
			}
		} else if(isPlainObject(inject)) {
			for(var key in inject) {
				var val = inject[key];
				normalized[key] = isPlainObject(val) ?
					extend({
						from: key
					}, val) :
					{
						from: val
					};
			}
		} else {
			warn(
				"Invalid value for option \"inject\": expected an Array or an Object, " +
				"but got " + (toRawType(inject)) + ".",
				vm
			);
		}
	}

	/**
	 * Normalize raw function directives into object format.
	 */
	function normalizeDirectives(options) {
		var dirs = options.directives;
		if(dirs) {
			for(var key in dirs) {
				var def$$1 = dirs[key];
				if(typeof def$$1 === 'function') {
					dirs[key] = {
						bind: def$$1,
						update: def$$1
					};
				}
			}
		}
	}

	function assertObjectType(name, value, vm) {
		if(!isPlainObject(value)) {
			warn(
				"Invalid value for option \"" + name + "\": expected an Object, " +
				"but got " + (toRawType(value)) + ".",
				vm
			);
		}
	}

	/**
	 * Merge two option objects into a new one.
	 * Core utility used in both instantiation and inheritance.
	 */
	function mergeOptions(
		parent,
		child,
		vm
	) {
		{
			checkComponents(child);
		}

		if(typeof child === 'function') {
			child = child.options;
		}

		normalizeProps(child, vm);
		normalizeInject(child, vm);
		normalizeDirectives(child);

		// Apply extends and mixins on the child options,
		// but only if it is a raw options object that isn't
		// the result of another mergeOptions call.
		// Only merged options has the _base property.
		if(!child._base) {
			if(child.extends) {
				parent = mergeOptions(parent, child.extends, vm);
			}
			if(child.mixins) {
				for(var i = 0, l = child.mixins.length; i < l; i++) {
					parent = mergeOptions(parent, child.mixins[i], vm);
				}
			}
		}

		var options = {};
		var key;
		for(key in parent) {
			mergeField(key);
		}
		for(key in child) {
			if(!hasOwn(parent, key)) {
				mergeField(key);
			}
		}

		function mergeField(key) {
			var strat = strats[key] || defaultStrat;
			options[key] = strat(parent[key], child[key], vm, key);
		}
		return options
	}

	/**
	 * Resolve an asset.
	 * This function is used because child instances need access
	 * to assets defined in its ancestor chain.
	 */
	function resolveAsset(
		options,
		type,
		id,
		warnMissing
	) {
		/* istanbul ignore if */
		if(typeof id !== 'string') {
			return
		}
		var assets = options[type];
		// check local registration variations first
		if(hasOwn(assets, id)) {
			return assets[id]
		}
		var camelizedId = camelize(id);
		if(hasOwn(assets, camelizedId)) {
			return assets[camelizedId]
		}
		var PascalCaseId = capitalize(camelizedId);
		if(hasOwn(assets, PascalCaseId)) {
			return assets[PascalCaseId]
		}
		// fallback to prototype chain
		var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
		if(warnMissing && !res) {
			warn(
				'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
				options
			);
		}
		return res
	}

	/*  */

	function validateProp(
		key,
		propOptions,
		propsData,
		vm
	) {
		var prop = propOptions[key];
		var absent = !hasOwn(propsData, key);
		var value = propsData[key];
		// boolean casting
		var booleanIndex = getTypeIndex(Boolean, prop.type);
		if(booleanIndex > -1) {
			if(absent && !hasOwn(prop, 'default')) {
				value = false;
			} else if(value === '' || value === hyphenate(key)) {
				// only cast empty string / same name to boolean if
				// boolean has higher priority
				var stringIndex = getTypeIndex(String, prop.type);
				if(stringIndex < 0 || booleanIndex < stringIndex) {
					value = true;
				}
			}
		}
		// check default value
		if(value === undefined) {
			value = getPropDefaultValue(vm, prop, key);
			// since the default value is a fresh copy,
			// make sure to observe it.
			var prevShouldObserve = shouldObserve;
			toggleObserving(true);
			observe(value);
			toggleObserving(prevShouldObserve);
		} {
			assertProp(prop, key, value, vm, absent);
		}
		return value
	}

	/**
	 * Get the default value of a prop.
	 */
	function getPropDefaultValue(vm, prop, key) {
		// no default, return undefined
		if(!hasOwn(prop, 'default')) {
			return undefined
		}
		var def = prop.default;
		// warn against non-factory defaults for Object & Array
		if(isObject(def)) {
			warn(
				'Invalid default value for prop "' + key + '": ' +
				'Props with type Object/Array must use a factory function ' +
				'to return the default value.',
				vm
			);
		}
		// the raw prop value was also undefined from previous render,
		// return previous default value to avoid unnecessary watcher trigger
		if(vm && vm.$options.propsData &&
			vm.$options.propsData[key] === undefined &&
			vm._props[key] !== undefined
		) {
			return vm._props[key]
		}
		// call factory function for non-Function types
		// a value is Function if its prototype is function even across different execution context
		return typeof def === 'function' && getType(prop.type) !== 'Function' ?
			def.call(vm) :
			def
	}

	/**
	 * Assert whether a prop is valid.
	 */
	function assertProp(
		prop,
		name,
		value,
		vm,
		absent
	) {
		if(prop.required && absent) {
			warn(
				'Missing required prop: "' + name + '"',
				vm
			);
			return
		}
		if(value == null && !prop.required) {
			return
		}
		var type = prop.type;
		var valid = !type || type === true;
		var expectedTypes = [];
		if(type) {
			if(!Array.isArray(type)) {
				type = [type];
			}
			for(var i = 0; i < type.length && !valid; i++) {
				var assertedType = assertType(value, type[i]);
				expectedTypes.push(assertedType.expectedType || '');
				valid = assertedType.valid;
			}
		}

		if(!valid) {
			warn(
				getInvalidTypeMessage(name, value, expectedTypes),
				vm
			);
			return
		}
		var validator = prop.validator;
		if(validator) {
			if(!validator(value)) {
				warn(
					'Invalid prop: custom validator check failed for prop "' + name + '".',
					vm
				);
			}
		}
	}

	var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;

	function assertType(value, type) {
		var valid;
		var expectedType = getType(type);
		if(simpleCheckRE.test(expectedType)) {
			var t = typeof value;
			valid = t === expectedType.toLowerCase();
			// for primitive wrapper objects
			if(!valid && t === 'object') {
				valid = value instanceof type;
			}
		} else if(expectedType === 'Object') {
			valid = isPlainObject(value);
		} else if(expectedType === 'Array') {
			valid = Array.isArray(value);
		} else {
			valid = value instanceof type;
		}
		return {
			valid: valid,
			expectedType: expectedType
		}
	}

	/**
	 * Use function string name to check built-in types,
	 * because a simple equality check will fail when running
	 * across different vms / iframes.
	 */
	function getType(fn) {
		var match = fn && fn.toString().match(/^\s*function (\w+)/);
		return match ? match[1] : ''
	}

	function isSameType(a, b) {
		return getType(a) === getType(b)
	}

	function getTypeIndex(type, expectedTypes) {
		if(!Array.isArray(expectedTypes)) {
			return isSameType(expectedTypes, type) ? 0 : -1
		}
		for(var i = 0, len = expectedTypes.length; i < len; i++) {
			if(isSameType(expectedTypes[i], type)) {
				return i
			}
		}
		return -1
	}

	function getInvalidTypeMessage(name, value, expectedTypes) {
		var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
			" Expected " + (expectedTypes.map(capitalize).join(', '));
		var expectedType = expectedTypes[0];
		var receivedType = toRawType(value);
		var expectedValue = styleValue(value, expectedType);
		var receivedValue = styleValue(value, receivedType);
		// check if we need to specify expected value
		if(expectedTypes.length === 1 &&
			isExplicable(expectedType) &&
			!isBoolean(expectedType, receivedType)) {
			message += " with value " + expectedValue;
		}
		message += ", got " + receivedType + " ";
		// check if we need to specify received value
		if(isExplicable(receivedType)) {
			message += "with value " + receivedValue + ".";
		}
		return message
	}

	function styleValue(value, type) {
		if(type === 'String') {
			return("\"" + value + "\"")
		} else if(type === 'Number') {
			return("" + (Number(value)))
		} else {
			return("" + value)
		}
	}

	function isExplicable(value) {
		var explicitTypes = ['string', 'number', 'boolean'];
		return explicitTypes.some(function(elem) {
			return value.toLowerCase() === elem;
		})
	}

	function isBoolean() {
		var args = [],
			len = arguments.length;
		while(len--) args[len] = arguments[len];

		return args.some(function(elem) {
			return elem.toLowerCase() === 'boolean';
		})
	}

	/*  */

	function handleError(err, vm, info) {
		// Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
		// See: https://github.com/vuejs/vuex/issues/1505
		pushTarget();
		try {
			if(vm) {
				var cur = vm;
				while((cur = cur.$parent)) {
					var hooks = cur.$options.errorCaptured;
					if(hooks) {
						for(var i = 0; i < hooks.length; i++) {
							try {
								var capture = hooks[i].call(cur, err, vm, info) === false;
								if(capture) {
									return
								}
							} catch(e) {
								globalHandleError(e, cur, 'errorCaptured hook');
							}
						}
					}
				}
			}
			globalHandleError(err, vm, info);
		} finally {
			popTarget();
		}
	}

	function invokeWithErrorHandling(
		handler,
		context,
		args,
		vm,
		info
	) {
		var res;
		try {
			res = args ? handler.apply(context, args) : handler.call(context);
			if(res && !res._isVue && isPromise(res) && !res._handled) {
				res.catch(function(e) {
					return handleError(e, vm, info + " (Promise/async)");
				});
				// issue #9511
				// avoid catch triggering multiple times when nested calls
				res._handled = true;
			}
		} catch(e) {
			handleError(e, vm, info);
		}
		return res
	}

	function globalHandleError(err, vm, info) {
		if(config.errorHandler) {
			try {
				return config.errorHandler.call(null, err, vm, info)
			} catch(e) {
				// if the user intentionally throws the original error in the handler,
				// do not log it twice
				if(e !== err) {
					logError(e, null, 'config.errorHandler');
				}
			}
		}
		logError(err, vm, info);
	}

	function logError(err, vm, info) {
		{
			warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
		}
		/* istanbul ignore else */
		if((inBrowser || inWeex) && typeof console !== 'undefined') {
			console.error(err);
		} else {
			throw err
		}
	}

	/*  */

	var isUsingMicroTask = false;

	var callbacks = [];
	var pending = false;

	function flushCallbacks() {
		pending = false;
		var copies = callbacks.slice(0);
		callbacks.length = 0;
		for(var i = 0; i < copies.length; i++) {
			copies[i]();
		}
	}

	// Here we have async deferring wrappers using microtasks.
	// In 2.5 we used (macro) tasks (in combination with microtasks).
	// However, it has subtle problems when state is changed right before repaint
	// (e.g. #6813, out-in transitions).
	// Also, using (macro) tasks in event handler would cause some weird behaviors
	// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
	// So we now use microtasks everywhere, again.
	// A major drawback of this tradeoff is that there are some scenarios
	// where microtasks have too high a priority and fire in between supposedly
	// sequential events (e.g. #4521, #6690, which have workarounds)
	// or even between bubbling of the same event (#6566).
	var timerFunc;

	// The nextTick behavior leverages the microtask queue, which can be accessed
	// via either native Promise.then or MutationObserver.
	// MutationObserver has wider support, however it is seriously bugged in
	// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
	// completely stops working after triggering a few times... so, if native
	// Promise is available, we will use it:
	/* istanbul ignore next, $flow-disable-line */
	if(typeof Promise !== 'undefined' && isNative(Promise)) {
		var p = Promise.resolve();
		timerFunc = function() {
			p.then(flushCallbacks);
			// In problematic UIWebViews, Promise.then doesn't completely break, but
			// it can get stuck in a weird state where callbacks are pushed into the
			// microtask queue but the queue isn't being flushed, until the browser
			// needs to do some other work, e.g. handle a timer. Therefore we can
			// "force" the microtask queue to be flushed by adding an empty timer.
			if(isIOS) {
				setTimeout(noop);
			}
		};
		isUsingMicroTask = true;
	} else if(!isIE && typeof MutationObserver !== 'undefined' && (
			isNative(MutationObserver) ||
			// PhantomJS and iOS 7.x
			MutationObserver.toString() === '[object MutationObserverConstructor]'
		)) {
		// Use MutationObserver where native Promise is not available,
		// e.g. PhantomJS, iOS7, Android 4.4
		// (#6466 MutationObserver is unreliable in IE11)
		var counter = 1;
		var observer = new MutationObserver(flushCallbacks);
		var textNode = document.createTextNode(String(counter));
		observer.observe(textNode, {
			characterData: true
		});
		timerFunc = function() {
			counter = (counter + 1) % 2;
			textNode.data = String(counter);
		};
		isUsingMicroTask = true;
	} else if(typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
		// Fallback to setImmediate.
		// Technically it leverages the (macro) task queue,
		// but it is still a better choice than setTimeout.
		timerFunc = function() {
			setImmediate(flushCallbacks);
		};
	} else {
		// Fallback to setTimeout.
		timerFunc = function() {
			setTimeout(flushCallbacks, 0);
		};
	}

	function nextTick(cb, ctx) {
		var _resolve;
		callbacks.push(function() {
			if(cb) {
				try {
					cb.call(ctx);
				} catch(e) {
					handleError(e, ctx, 'nextTick');
				}
			} else if(_resolve) {
				_resolve(ctx);
			}
		});
		if(!pending) {
			pending = true;
			timerFunc();
		}
		// $flow-disable-line
		if(!cb && typeof Promise !== 'undefined') {
			return new Promise(function(resolve) {
				_resolve = resolve;
			})
		}
	}

	/*  */

	var mark;
	var measure;

	{
		var perf = inBrowser && window.performance;
		/* istanbul ignore if */
		if(
			perf &&
			perf.mark &&
			perf.measure &&
			perf.clearMarks &&
			perf.clearMeasures
		) {
			mark = function(tag) {
				return perf.mark(tag);
			};
			measure = function(name, startTag, endTag) {
				perf.measure(name, startTag, endTag);
				perf.clearMarks(startTag);
				perf.clearMarks(endTag);
				// perf.clearMeasures(name)
			};
		}
	}

	/* not type checking this file because flow doesn't play well with Proxy */

	var initProxy;

	{
		var allowedGlobals = makeMap(
			'Infinity,undefined,NaN,isFinite,isNaN,' +
			'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
			'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
			'require' // for Webpack/Browserify
		);

		var warnNonPresent = function(target, key) {
			warn(
				"Property or method \"" + key + "\" is not defined on the instance but " +
				'referenced during render. Make sure that this property is reactive, ' +
				'either in the data option, or for class-based components, by ' +
				'initializing the property. ' +
				'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
				target
			);
		};

		var warnReservedPrefix = function(target, key) {
			warn(
				"Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
				'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
				'prevent conflicts with Vue internals. ' +
				'See: https://vuejs.org/v2/api/#data',
				target
			);
		};

		var hasProxy =
			typeof Proxy !== 'undefined' && isNative(Proxy);

		if(hasProxy) {
			var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
			config.keyCodes = new Proxy(config.keyCodes, {
				set: function set(target, key, value) {
					if(isBuiltInModifier(key)) {
						warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
						return false
					} else {
						target[key] = value;
						return true
					}
				}
			});
		}

		var hasHandler = {
			has: function has(target, key) {
				var has = key in target;
				var isAllowed = allowedGlobals(key) ||
					(typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
				if(!has && !isAllowed) {
					if(key in target.$data) {
						warnReservedPrefix(target, key);
					} else {
						warnNonPresent(target, key);
					}
				}
				return has || !isAllowed
			}
		};

		var getHandler = {
			get: function get(target, key) {
				if(typeof key === 'string' && !(key in target)) {
					if(key in target.$data) {
						warnReservedPrefix(target, key);
					} else {
						warnNonPresent(target, key);
					}
				}
				return target[key]
			}
		};

		initProxy = function initProxy(vm) {
			if(hasProxy) {
				// determine which proxy handler to use
				var options = vm.$options;
				var handlers = options.render && options.render._withStripped ?
					getHandler :
					hasHandler;
				vm._renderProxy = new Proxy(vm, handlers);
			} else {
				vm._renderProxy = vm;
			}
		};
	}

	/*  */

	var seenObjects = new _Set();

	/**
	 * Recursively traverse an object to evoke all converted
	 * getters, so that every nested property inside the object
	 * is collected as a "deep" dependency.
	 */
	function traverse(val) {
		_traverse(val, seenObjects);
		seenObjects.clear();
	}

	function _traverse(val, seen) {
		var i, keys;
		var isA = Array.isArray(val);
		if((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
			return
		}
		if(val.__ob__) {
			var depId = val.__ob__.dep.id;
			if(seen.has(depId)) {
				return
			}
			seen.add(depId);
		}
		if(isA) {
			i = val.length;
			while(i--) {
				_traverse(val[i], seen);
			}
		} else {
			keys = Object.keys(val);
			i = keys.length;
			while(i--) {
				_traverse(val[keys[i]], seen);
			}
		}
	}

	/*  */

	var normalizeEvent = cached(function(name) {
		var passive = name.charAt(0) === '&';
		name = passive ? name.slice(1) : name;
		var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
		name = once$$1 ? name.slice(1) : name;
		var capture = name.charAt(0) === '!';
		name = capture ? name.slice(1) : name;
		return {
			name: name,
			once: once$$1,
			capture: capture,
			passive: passive
		}
	});

	function createFnInvoker(fns, vm) {
		function invoker() {
			var arguments$1 = arguments;

			var fns = invoker.fns;
			if(Array.isArray(fns)) {
				var cloned = fns.slice();
				for(var i = 0; i < cloned.length; i++) {
					invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
				}
			} else {
				// return handler return value for single handlers
				return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
			}
		}
		invoker.fns = fns;
		return invoker
	}

	function updateListeners(
		on,
		oldOn,
		add,
		remove$$1,
		createOnceHandler,
		vm
	) {
		var name, def$$1, cur, old, event;
		for(name in on) {
			def$$1 = cur = on[name];
			old = oldOn[name];
			event = normalizeEvent(name);
			if(isUndef(cur)) {
				warn(
					"Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
					vm
				);
			} else if(isUndef(old)) {
				if(isUndef(cur.fns)) {
					cur = on[name] = createFnInvoker(cur, vm);
				}
				if(isTrue(event.once)) {
					cur = on[name] = createOnceHandler(event.name, cur, event.capture);
				}
				add(event.name, cur, event.capture, event.passive, event.params);
			} else if(cur !== old) {
				old.fns = cur;
				on[name] = old;
			}
		}
		for(name in oldOn) {
			if(isUndef(on[name])) {
				event = normalizeEvent(name);
				remove$$1(event.name, oldOn[name], event.capture);
			}
		}
	}

	/*  */

	function mergeVNodeHook(def, hookKey, hook) {
		if(def instanceof VNode) {
			def = def.data.hook || (def.data.hook = {});
		}
		var invoker;
		var oldHook = def[hookKey];

		function wrappedHook() {
			hook.apply(this, arguments);
			// important: remove merged hook to ensure it's called only once
			// and prevent memory leak
			remove(invoker.fns, wrappedHook);
		}

		if(isUndef(oldHook)) {
			// no existing hook
			invoker = createFnInvoker([wrappedHook]);
		} else {
			/* istanbul ignore if */
			if(isDef(oldHook.fns) && isTrue(oldHook.merged)) {
				// already a merged invoker
				invoker = oldHook;
				invoker.fns.push(wrappedHook);
			} else {
				// existing plain hook
				invoker = createFnInvoker([oldHook, wrappedHook]);
			}
		}

		invoker.merged = true;
		def[hookKey] = invoker;
	}

	/*  */

	function extractPropsFromVNodeData(
		data,
		Ctor,
		tag
	) {
		// we are only extracting raw values here.
		// validation and default values are handled in the child
		// component itself.
		var propOptions = Ctor.options.props;
		if(isUndef(propOptions)) {
			return
		}
		var res = {};
		var attrs = data.attrs;
		var props = data.props;
		if(isDef(attrs) || isDef(props)) {
			for(var key in propOptions) {
				var altKey = hyphenate(key); {
					var keyInLowerCase = key.toLowerCase();
					if(
						key !== keyInLowerCase &&
						attrs && hasOwn(attrs, keyInLowerCase)
					) {
						tip(
							"Prop \"" + keyInLowerCase + "\" is passed to component " +
							(formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
							" \"" + key + "\". " +
							"Note that HTML attributes are case-insensitive and camelCased " +
							"props need to use their kebab-case equivalents when using in-DOM " +
							"templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
						);
					}
				}
				checkProp(res, props, key, altKey, true) ||
					checkProp(res, attrs, key, altKey, false);
			}
		}
		return res
	}

	function checkProp(
		res,
		hash,
		key,
		altKey,
		preserve
	) {
		if(isDef(hash)) {
			if(hasOwn(hash, key)) {
				res[key] = hash[key];
				if(!preserve) {
					delete hash[key];
				}
				return true
			} else if(hasOwn(hash, altKey)) {
				res[key] = hash[altKey];
				if(!preserve) {
					delete hash[altKey];
				}
				return true
			}
		}
		return false
	}

	/*  */

	// The template compiler attempts to minimize the need for normalization by
	// statically analyzing the template at compile time.
	//
	// For plain HTML markup, normalization can be completely skipped because the
	// generated render function is guaranteed to return Array<VNode>. There are
	// two cases where extra normalization is needed:

	// 1. When the children contains components - because a functional component
	// may return an Array instead of a single root. In this case, just a simple
	// normalization is needed - if any child is an Array, we flatten the whole
	// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
	// because functional components already normalize their own children.
	function simpleNormalizeChildren(children) {
		for(var i = 0; i < children.length; i++) {
			if(Array.isArray(children[i])) {
				return Array.prototype.concat.apply([], children)
			}
		}
		return children
	}

	// 2. When the children contains constructs that always generated nested Arrays,
	// e.g. <template>, <slot>, v-for, or when the children is provided by user
	// with hand-written render functions / JSX. In such cases a full normalization
	// is needed to cater to all possible types of children values.
	function normalizeChildren(children) {
		return isPrimitive(children) ?
			[createTextVNode(children)] :
			Array.isArray(children) ?
			normalizeArrayChildren(children) :
			undefined
	}

	function isTextNode(node) {
		return isDef(node) && isDef(node.text) && isFalse(node.isComment)
	}

	function normalizeArrayChildren(children, nestedIndex) {
		var res = [];
		var i, c, lastIndex, last;
		for(i = 0; i < children.length; i++) {
			c = children[i];
			if(isUndef(c) || typeof c === 'boolean') {
				continue
			}
			lastIndex = res.length - 1;
			last = res[lastIndex];
			//  nested
			if(Array.isArray(c)) {
				if(c.length > 0) {
					c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
					// merge adjacent text nodes
					if(isTextNode(c[0]) && isTextNode(last)) {
						res[lastIndex] = createTextVNode(last.text + (c[0]).text);
						c.shift();
					}
					res.push.apply(res, c);
				}
			} else if(isPrimitive(c)) {
				if(isTextNode(last)) {
					// merge adjacent text nodes
					// this is necessary for SSR hydration because text nodes are
					// essentially merged when rendered to HTML strings
					res[lastIndex] = createTextVNode(last.text + c);
				} else if(c !== '') {
					// convert primitive to vnode
					res.push(createTextVNode(c));
				}
			} else {
				if(isTextNode(c) && isTextNode(last)) {
					// merge adjacent text nodes
					res[lastIndex] = createTextVNode(last.text + c.text);
				} else {
					// default key for nested array children (likely generated by v-for)
					if(isTrue(children._isVList) &&
						isDef(c.tag) &&
						isUndef(c.key) &&
						isDef(nestedIndex)) {
						c.key = "__vlist" + nestedIndex + "_" + i + "__";
					}
					res.push(c);
				}
			}
		}
		return res
	}

	/*  */

	function initProvide(vm) {
		var provide = vm.$options.provide;
		if(provide) {
			vm._provided = typeof provide === 'function' ?
				provide.call(vm) :
				provide;
		}
	}

	function initInjections(vm) {
		var result = resolveInject(vm.$options.inject, vm);
		if(result) {
			toggleObserving(false);
			Object.keys(result).forEach(function(key) {
				/* istanbul ignore else */
				{
					defineReactive$$1(vm, key, result[key], function() {
						warn(
							"Avoid mutating an injected value directly since the changes will be " +
							"overwritten whenever the provided component re-renders. " +
							"injection being mutated: \"" + key + "\"",
							vm
						);
					});
				}
			});
			toggleObserving(true);
		}
	}

	function resolveInject(inject, vm) {
		if(inject) {
			// inject is :any because flow is not smart enough to figure out cached
			var result = Object.create(null);
			var keys = hasSymbol ?
				Reflect.ownKeys(inject) :
				Object.keys(inject);

			for(var i = 0; i < keys.length; i++) {
				var key = keys[i];
				// #6574 in case the inject object is observed...
				if(key === '__ob__') {
					continue
				}
				var provideKey = inject[key].from;
				var source = vm;
				while(source) {
					if(source._provided && hasOwn(source._provided, provideKey)) {
						result[key] = source._provided[provideKey];
						break
					}
					source = source.$parent;
				}
				if(!source) {
					if('default' in inject[key]) {
						var provideDefault = inject[key].default;
						result[key] = typeof provideDefault === 'function' ?
							provideDefault.call(vm) :
							provideDefault;
					} else {
						warn(("Injection \"" + key + "\" not found"), vm);
					}
				}
			}
			return result
		}
	}

	/*  */

	/**
	 * Runtime helper for resolving raw children VNodes into a slot object.
	 */
	function resolveSlots(
		children,
		context
	) {
		if(!children || !children.length) {
			return {}
		}
		var slots = {};
		for(var i = 0, l = children.length; i < l; i++) {
			var child = children[i];
			var data = child.data;
			// remove slot attribute if the node is resolved as a Vue slot node
			if(data && data.attrs && data.attrs.slot) {
				delete data.attrs.slot;
			}
			// named slots should only be respected if the vnode was rendered in the
			// same context.
			if((child.context === context || child.fnContext === context) &&
				data && data.slot != null
			) {
				var name = data.slot;
				var slot = (slots[name] || (slots[name] = []));
				if(child.tag === 'template') {
					slot.push.apply(slot, child.children || []);
				} else {
					slot.push(child);
				}
			} else {
				(slots.default || (slots.default = [])).push(child);
			}
		}
		// ignore slots that contains only whitespace
		for(var name$1 in slots) {
			if(slots[name$1].every(isWhitespace)) {
				delete slots[name$1];
			}
		}
		return slots
	}

	function isWhitespace(node) {
		return(node.isComment && !node.asyncFactory) || node.text === ' '
	}

	/*  */

	function normalizeScopedSlots(
		slots,
		normalSlots,
		prevSlots
	) {
		var res;
		var hasNormalSlots = Object.keys(normalSlots).length > 0;
		var isStable = slots ? !!slots.$stable : !hasNormalSlots;
		var key = slots && slots.$key;
		if(!slots) {
			res = {};
		} else if(slots._normalized) {
			// fast path 1: child component re-render only, parent did not change
			return slots._normalized
		} else if(
			isStable &&
			prevSlots &&
			prevSlots !== emptyObject &&
			key === prevSlots.$key &&
			!hasNormalSlots &&
			!prevSlots.$hasNormal
		) {
			// fast path 2: stable scoped slots w/ no normal slots to proxy,
			// only need to normalize once
			return prevSlots
		} else {
			res = {};
			for(var key$1 in slots) {
				if(slots[key$1] && key$1[0] !== '$') {
					res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);
				}
			}
		}
		// expose normal slots on scopedSlots
		for(var key$2 in normalSlots) {
			if(!(key$2 in res)) {
				res[key$2] = proxyNormalSlot(normalSlots, key$2);
			}
		}
		// avoriaz seems to mock a non-extensible $scopedSlots object
		// and when that is passed down this would cause an error
		if(slots && Object.isExtensible(slots)) {
			(slots)._normalized = res;
		}
		def(res, '$stable', isStable);
		def(res, '$key', key);
		def(res, '$hasNormal', hasNormalSlots);
		return res
	}

	function normalizeScopedSlot(normalSlots, key, fn) {
		var normalized = function() {
			var res = arguments.length ? fn.apply(null, arguments) : fn({});
			res = res && typeof res === 'object' && !Array.isArray(res) ?
				[res] // single vnode
				:
				normalizeChildren(res);
			return res && (
					res.length === 0 ||
					(res.length === 1 && res[0].isComment) // #9658
				) ? undefined :
				res
		};
		// this is a slot using the new v-slot syntax without scope. although it is
		// compiled as a scoped slot, render fn users would expect it to be present
		// on this.$slots because the usage is semantically a normal slot.
		if(fn.proxy) {
			Object.defineProperty(normalSlots, key, {
				get: normalized,
				enumerable: true,
				configurable: true
			});
		}
		return normalized
	}

	function proxyNormalSlot(slots, key) {
		return function() {
			return slots[key];
		}
	}

	/*  */

	/**
	 * Runtime helper for rendering v-for lists.
	 */
	function renderList(
		val,
		render
	) {
		var ret, i, l, keys, key;
		if(Array.isArray(val) || typeof val === 'string') {
			ret = new Array(val.length);
			for(i = 0, l = val.length; i < l; i++) {
				ret[i] = render(val[i], i);
			}
		} else if(typeof val === 'number') {
			ret = new Array(val);
			for(i = 0; i < val; i++) {
				ret[i] = render(i + 1, i);
			}
		} else if(isObject(val)) {
			if(hasSymbol && val[Symbol.iterator]) {
				ret = [];
				var iterator = val[Symbol.iterator]();
				var result = iterator.next();
				while(!result.done) {
					ret.push(render(result.value, ret.length));
					result = iterator.next();
				}
			} else {
				keys = Object.keys(val);
				ret = new Array(keys.length);
				for(i = 0, l = keys.length; i < l; i++) {
					key = keys[i];
					ret[i] = render(val[key], key, i);
				}
			}
		}
		if(!isDef(ret)) {
			ret = [];
		}
		(ret)._isVList = true;
		return ret
	}

	/*  */

	/**
	 * Runtime helper for rendering <slot>
	 */
	function renderSlot(
		name,
		fallback,
		props,
		bindObject
	) {
		var scopedSlotFn = this.$scopedSlots[name];
		var nodes;
		if(scopedSlotFn) { // scoped slot
			props = props || {};
			if(bindObject) {
				if(!isObject(bindObject)) {
					warn(
						'slot v-bind without argument expects an Object',
						this
					);
				}
				props = extend(extend({}, bindObject), props);
			}
			nodes = scopedSlotFn(props) || fallback;
		} else {
			nodes = this.$slots[name] || fallback;
		}

		var target = props && props.slot;
		if(target) {
			return this.$createElement('template', {
				slot: target
			}, nodes)
		} else {
			return nodes
		}
	}

	/*  */

	/**
	 * Runtime helper for resolving filters
	 */
	function resolveFilter(id) {
		return resolveAsset(this.$options, 'filters', id, true) || identity
	}

	/*  */

	function isKeyNotMatch(expect, actual) {
		if(Array.isArray(expect)) {
			return expect.indexOf(actual) === -1
		} else {
			return expect !== actual
		}
	}

	/**
	 * Runtime helper for checking keyCodes from config.
	 * exposed as Vue.prototype._k
	 * passing in eventKeyName as last argument separately for backwards compat
	 */
	function checkKeyCodes(
		eventKeyCode,
		key,
		builtInKeyCode,
		eventKeyName,
		builtInKeyName
	) {
		var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
		if(builtInKeyName && eventKeyName && !config.keyCodes[key]) {
			return isKeyNotMatch(builtInKeyName, eventKeyName)
		} else if(mappedKeyCode) {
			return isKeyNotMatch(mappedKeyCode, eventKeyCode)
		} else if(eventKeyName) {
			return hyphenate(eventKeyName) !== key
		}
	}

	/*  */

	/**
	 * Runtime helper for merging v-bind="object" into a VNode's data.
	 */
	function bindObjectProps(
		data,
		tag,
		value,
		asProp,
		isSync
	) {
		if(value) {
			if(!isObject(value)) {
				warn(
					'v-bind without argument expects an Object or Array value',
					this
				);
			} else {
				if(Array.isArray(value)) {
					value = toObject(value);
				}
				var hash;
				var loop = function(key) {
					if(
						key === 'class' ||
						key === 'style' ||
						isReservedAttribute(key)
					) {
						hash = data;
					} else {
						var type = data.attrs && data.attrs.type;
						hash = asProp || config.mustUseProp(tag, type, key) ?
							data.domProps || (data.domProps = {}) :
							data.attrs || (data.attrs = {});
					}
					var camelizedKey = camelize(key);
					var hyphenatedKey = hyphenate(key);
					if(!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
						hash[key] = value[key];

						if(isSync) {
							var on = data.on || (data.on = {});
							on[("update:" + key)] = function($event) {
								value[key] = $event;
							};
						}
					}
				};

				for(var key in value) loop(key);
			}
		}
		return data
	}

	/*  */

	/**
	 * Runtime helper for rendering static trees.
	 */
	function renderStatic(
		index,
		isInFor
	) {
		var cached = this._staticTrees || (this._staticTrees = []);
		var tree = cached[index];
		// if has already-rendered static tree and not inside v-for,
		// we can reuse the same tree.
		if(tree && !isInFor) {
			return tree
		}
		// otherwise, render a fresh tree.
		tree = cached[index] = this.$options.staticRenderFns[index].call(
			this._renderProxy,
			null,
			this // for render fns generated for functional component templates
		);
		markStatic(tree, ("__static__" + index), false);
		return tree
	}

	/**
	 * Runtime helper for v-once.
	 * Effectively it means marking the node as static with a unique key.
	 */
	function markOnce(
		tree,
		index,
		key
	) {
		markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
		return tree
	}

	function markStatic(
		tree,
		key,
		isOnce
	) {
		if(Array.isArray(tree)) {
			for(var i = 0; i < tree.length; i++) {
				if(tree[i] && typeof tree[i] !== 'string') {
					markStaticNode(tree[i], (key + "_" + i), isOnce);
				}
			}
		} else {
			markStaticNode(tree, key, isOnce);
		}
	}

	function markStaticNode(node, key, isOnce) {
		node.isStatic = true;
		node.key = key;
		node.isOnce = isOnce;
	}

	/*  */

	function bindObjectListeners(data, value) {
		if(value) {
			if(!isPlainObject(value)) {
				warn(
					'v-on without argument expects an Object value',
					this
				);
			} else {
				var on = data.on = data.on ? extend({}, data.on) : {};
				for(var key in value) {
					var existing = on[key];
					var ours = value[key];
					on[key] = existing ? [].concat(existing, ours) : ours;
				}
			}
		}
		return data
	}

	/*  */

	function resolveScopedSlots(
		fns, // see flow/vnode
		res,
		// the following are added in 2.6
		hasDynamicKeys,
		contentHashKey
	) {
		res = res || {
			$stable: !hasDynamicKeys
		};
		for(var i = 0; i < fns.length; i++) {
			var slot = fns[i];
			if(Array.isArray(slot)) {
				resolveScopedSlots(slot, res, hasDynamicKeys);
			} else if(slot) {
				// marker for reverse proxying v-slot without scope on this.$slots
				if(slot.proxy) {
					slot.fn.proxy = true;
				}
				res[slot.key] = slot.fn;
			}
		}
		if(contentHashKey) {
			(res).$key = contentHashKey;
		}
		return res
	}

	/*  */

	function bindDynamicKeys(baseObj, values) {
		for(var i = 0; i < values.length; i += 2) {
			var key = values[i];
			if(typeof key === 'string' && key) {
				baseObj[values[i]] = values[i + 1];
			} else if(key !== '' && key !== null) {
				// null is a special value for explicitly removing a binding
				warn(
					("Invalid value for dynamic directive argument (expected string or null): " + key),
					this
				);
			}
		}
		return baseObj
	}

	// helper to dynamically append modifier runtime markers to event names.
	// ensure only append when value is already string, otherwise it will be cast
	// to string and cause the type check to miss.
	function prependModifier(value, symbol) {
		return typeof value === 'string' ? symbol + value : value
	}

	/*  */

	function installRenderHelpers(target) {
		target._o = markOnce;
		target._n = toNumber;
		target._s = toString;
		target._l = renderList;
		target._t = renderSlot;
		target._q = looseEqual;
		target._i = looseIndexOf;
		target._m = renderStatic;
		target._f = resolveFilter;
		target._k = checkKeyCodes;
		target._b = bindObjectProps;
		target._v = createTextVNode;
		target._e = createEmptyVNode;
		target._u = resolveScopedSlots;
		target._g = bindObjectListeners;
		target._d = bindDynamicKeys;
		target._p = prependModifier;
	}

	/*  */

	function FunctionalRenderContext(
		data,
		props,
		children,
		parent,
		Ctor
	) {
		var this$1 = this;

		var options = Ctor.options;
		// ensure the createElement function in functional components
		// gets a unique context - this is necessary for correct named slot check
		var contextVm;
		if(hasOwn(parent, '_uid')) {
			contextVm = Object.create(parent);
			// $flow-disable-line
			contextVm._original = parent;
		} else {
			// the context vm passed in is a functional context as well.
			// in this case we want to make sure we are able to get a hold to the
			// real context instance.
			contextVm = parent;
			// $flow-disable-line
			parent = parent._original;
		}
		var isCompiled = isTrue(options._compiled);
		var needNormalization = !isCompiled;

		this.data = data;
		this.props = props;
		this.children = children;
		this.parent = parent;
		this.listeners = data.on || emptyObject;
		this.injections = resolveInject(options.inject, parent);
		this.slots = function() {
			if(!this$1.$slots) {
				normalizeScopedSlots(
					data.scopedSlots,
					this$1.$slots = resolveSlots(children, parent)
				);
			}
			return this$1.$slots
		};

		Object.defineProperty(this, 'scopedSlots', ({
			enumerable: true,
			get: function get() {
				return normalizeScopedSlots(data.scopedSlots, this.slots())
			}
		}));

		// support for compiled functional template
		if(isCompiled) {
			// exposing $options for renderStatic()
			this.$options = options;
			// pre-resolve slots for renderSlot()
			this.$slots = this.slots();
			this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
		}

		if(options._scopeId) {
			this._c = function(a, b, c, d) {
				var vnode = createElement(contextVm, a, b, c, d, needNormalization);
				if(vnode && !Array.isArray(vnode)) {
					vnode.fnScopeId = options._scopeId;
					vnode.fnContext = parent;
				}
				return vnode
			};
		} else {
			this._c = function(a, b, c, d) {
				return createElement(contextVm, a, b, c, d, needNormalization);
			};
		}
	}

	installRenderHelpers(FunctionalRenderContext.prototype);

	function createFunctionalComponent(
		Ctor,
		propsData,
		data,
		contextVm,
		children
	) {
		var options = Ctor.options;
		var props = {};
		var propOptions = options.props;
		if(isDef(propOptions)) {
			for(var key in propOptions) {
				props[key] = validateProp(key, propOptions, propsData || emptyObject);
			}
		} else {
			if(isDef(data.attrs)) {
				mergeProps(props, data.attrs);
			}
			if(isDef(data.props)) {
				mergeProps(props, data.props);
			}
		}

		var renderContext = new FunctionalRenderContext(
			data,
			props,
			children,
			contextVm,
			Ctor
		);

		var vnode = options.render.call(null, renderContext._c, renderContext);

		if(vnode instanceof VNode) {
			return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
		} else if(Array.isArray(vnode)) {
			var vnodes = normalizeChildren(vnode) || [];
			var res = new Array(vnodes.length);
			for(var i = 0; i < vnodes.length; i++) {
				res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
			}
			return res
		}
	}

	function cloneAndMarkFunctionalResult(vnode, data, contextVm, options, renderContext) {
		// #7817 clone node before setting fnContext, otherwise if the node is reused
		// (e.g. it was from a cached normal slot) the fnContext causes named slots
		// that should not be matched to match.
		var clone = cloneVNode(vnode);
		clone.fnContext = contextVm;
		clone.fnOptions = options; {
			(clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
		}
		if(data.slot) {
			(clone.data || (clone.data = {})).slot = data.slot;
		}
		return clone
	}

	function mergeProps(to, from) {
		for(var key in from) {
			to[camelize(key)] = from[key];
		}
	}

	/*  */

	/*  */

	/*  */

	/*  */

	// inline hooks to be invoked on component VNodes during patch
	var componentVNodeHooks = {
		init: function init(vnode, hydrating) {
			if(
				vnode.componentInstance &&
				!vnode.componentInstance._isDestroyed &&
				vnode.data.keepAlive
			) {
				// kept-alive components, treat as a patch
				var mountedNode = vnode; // work around flow
				componentVNodeHooks.prepatch(mountedNode, mountedNode);
			} else {
				var child = vnode.componentInstance = createComponentInstanceForVnode(
					vnode,
					activeInstance
				);
				child.$mount(hydrating ? vnode.elm : undefined, hydrating);
			}
		},

		prepatch: function prepatch(oldVnode, vnode) {
			var options = vnode.componentOptions;
			var child = vnode.componentInstance = oldVnode.componentInstance;
			updateChildComponent(
				child,
				options.propsData, // updated props
				options.listeners, // updated listeners
				vnode, // new parent vnode
				options.children // new children
			);
		},

		insert: function insert(vnode) {
			var context = vnode.context;
			var componentInstance = vnode.componentInstance;
			if(!componentInstance._isMounted) {
				componentInstance._isMounted = true;
				callHook(componentInstance, 'mounted');
			}
			if(vnode.data.keepAlive) {
				if(context._isMounted) {
					// vue-router#1212
					// During updates, a kept-alive component's child components may
					// change, so directly walking the tree here may call activated hooks
					// on incorrect children. Instead we push them into a queue which will
					// be processed after the whole patch process ended.
					queueActivatedComponent(componentInstance);
				} else {
					activateChildComponent(componentInstance, true /* direct */ );
				}
			}
		},

		destroy: function destroy(vnode) {
			var componentInstance = vnode.componentInstance;
			if(!componentInstance._isDestroyed) {
				if(!vnode.data.keepAlive) {
					componentInstance.$destroy();
				} else {
					deactivateChildComponent(componentInstance, true /* direct */ );
				}
			}
		}
	};

	var hooksToMerge = Object.keys(componentVNodeHooks);

	function createComponent(
		Ctor,
		data,
		context,
		children,
		tag
	) {
		if(isUndef(Ctor)) {
			return
		}

		var baseCtor = context.$options._base;

		// plain options object: turn it into a constructor
		if(isObject(Ctor)) {
			Ctor = baseCtor.extend(Ctor);
		}

		// if at this stage it's not a constructor or an async component factory,
		// reject.
		if(typeof Ctor !== 'function') {
			{
				warn(("Invalid Component definition: " + (String(Ctor))), context);
			}
			return
		}

		// async component
		var asyncFactory;
		if(isUndef(Ctor.cid)) {
			asyncFactory = Ctor;
			Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
			if(Ctor === undefined) {
				// return a placeholder node for async component, which is rendered
				// as a comment node but preserves all the raw information for the node.
				// the information will be used for async server-rendering and hydration.
				return createAsyncPlaceholder(
					asyncFactory,
					data,
					context,
					children,
					tag
				)
			}
		}

		data = data || {};

		// resolve constructor options in case global mixins are applied after
		// component constructor creation
		resolveConstructorOptions(Ctor);

		// transform component v-model data into props & events
		if(isDef(data.model)) {
			transformModel(Ctor.options, data);
		}

		// extract props
		var propsData = extractPropsFromVNodeData(data, Ctor, tag);

		// functional component
		if(isTrue(Ctor.options.functional)) {
			return createFunctionalComponent(Ctor, propsData, data, context, children)
		}

		// extract listeners, since these needs to be treated as
		// child component listeners instead of DOM listeners
		var listeners = data.on;
		// replace with listeners with .native modifier
		// so it gets processed during parent component patch.
		data.on = data.nativeOn;

		if(isTrue(Ctor.options.abstract)) {
			// abstract components do not keep anything
			// other than props & listeners & slot

			// work around flow
			var slot = data.slot;
			data = {};
			if(slot) {
				data.slot = slot;
			}
		}

		// install component management hooks onto the placeholder node
		installComponentHooks(data);

		// return a placeholder vnode
		var name = Ctor.options.name || tag;
		var vnode = new VNode(
			("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
			data, undefined, undefined, undefined, context, {
				Ctor: Ctor,
				propsData: propsData,
				listeners: listeners,
				tag: tag,
				children: children
			},
			asyncFactory
		);

		return vnode
	}

	function createComponentInstanceForVnode(
		vnode, // we know it's MountedComponentVNode but flow doesn't
		parent // activeInstance in lifecycle state
	) {
		var options = {
			_isComponent: true,
			_parentVnode: vnode,
			parent: parent
		};
		// check inline-template render functions
		var inlineTemplate = vnode.data.inlineTemplate;
		if(isDef(inlineTemplate)) {
			options.render = inlineTemplate.render;
			options.staticRenderFns = inlineTemplate.staticRenderFns;
		}
		return new vnode.componentOptions.Ctor(options)
	}

	function installComponentHooks(data) {
		var hooks = data.hook || (data.hook = {});
		for(var i = 0; i < hooksToMerge.length; i++) {
			var key = hooksToMerge[i];
			var existing = hooks[key];
			var toMerge = componentVNodeHooks[key];
			if(existing !== toMerge && !(existing && existing._merged)) {
				hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
			}
		}
	}

	function mergeHook$1(f1, f2) {
		var merged = function(a, b) {
			// flow complains about extra args which is why we use any
			f1(a, b);
			f2(a, b);
		};
		merged._merged = true;
		return merged
	}

	// transform component v-model info (value and callback) into
	// prop and event handler respectively.
	function transformModel(options, data) {
		var prop = (options.model && options.model.prop) || 'value';
		var event = (options.model && options.model.event) || 'input';
		(data.attrs || (data.attrs = {}))[prop] = data.model.value;
		var on = data.on || (data.on = {});
		var existing = on[event];
		var callback = data.model.callback;
		if(isDef(existing)) {
			if(
				Array.isArray(existing) ?
				existing.indexOf(callback) === -1 :
				existing !== callback
			) {
				on[event] = [callback].concat(existing);
			}
		} else {
			on[event] = callback;
		}
	}

	/*  */

	var SIMPLE_NORMALIZE = 1;
	var ALWAYS_NORMALIZE = 2;

	// wrapper function for providing a more flexible interface
	// without getting yelled at by flow
	function createElement(
		context,
		tag,
		data,
		children,
		normalizationType,
		alwaysNormalize
	) {
		if(Array.isArray(data) || isPrimitive(data)) {
			normalizationType = children;
			children = data;
			data = undefined;
		}
		if(isTrue(alwaysNormalize)) {
			normalizationType = ALWAYS_NORMALIZE;
		}
		return _createElement(context, tag, data, children, normalizationType)
	}

	function _createElement(
		context,
		tag,
		data,
		children,
		normalizationType
	) {
		if(isDef(data) && isDef((data).__ob__)) {
			warn(
				"Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
				'Always create fresh vnode data objects in each render!',
				context
			);
			return createEmptyVNode()
		}
		// object syntax in v-bind
		if(isDef(data) && isDef(data.is)) {
			tag = data.is;
		}
		if(!tag) {
			// in case of component :is set to falsy value
			return createEmptyVNode()
		}
		// warn against non-primitive key
		if(isDef(data) && isDef(data.key) && !isPrimitive(data.key)) {
			{
				warn(
					'Avoid using non-primitive value as key, ' +
					'use string/number value instead.',
					context
				);
			}
		}
		// support single function children as default scoped slot
		if(Array.isArray(children) &&
			typeof children[0] === 'function'
		) {
			data = data || {};
			data.scopedSlots = {
				default: children[0]
			};
			children.length = 0;
		}
		if(normalizationType === ALWAYS_NORMALIZE) {
			children = normalizeChildren(children);
		} else if(normalizationType === SIMPLE_NORMALIZE) {
			children = simpleNormalizeChildren(children);
		}
		var vnode, ns;
		if(typeof tag === 'string') {
			var Ctor;
			ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
			if(config.isReservedTag(tag)) {
				// platform built-in elements
				if(isDef(data) && isDef(data.nativeOn)) {
					warn(
						("The .native modifier for v-on is only valid on components but it was used on <" + tag + ">."),
						context
					);
				}
				vnode = new VNode(
					config.parsePlatformTagName(tag), data, children,
					undefined, undefined, context
				);
			} else if((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
				// component
				vnode = createComponent(Ctor, data, context, children, tag);
			} else {
				// unknown or unlisted namespaced elements
				// check at runtime because it may get assigned a namespace when its
				// parent normalizes children
				vnode = new VNode(
					tag, data, children,
					undefined, undefined, context
				);
			}
		} else {
			// direct component options / constructor
			vnode = createComponent(tag, data, context, children);
		}
		if(Array.isArray(vnode)) {
			return vnode
		} else if(isDef(vnode)) {
			if(isDef(ns)) {
				applyNS(vnode, ns);
			}
			if(isDef(data)) {
				registerDeepBindings(data);
			}
			return vnode
		} else {
			return createEmptyVNode()
		}
	}

	function applyNS(vnode, ns, force) {
		vnode.ns = ns;
		if(vnode.tag === 'foreignObject') {
			// use default namespace inside foreignObject
			ns = undefined;
			force = true;
		}
		if(isDef(vnode.children)) {
			for(var i = 0, l = vnode.children.length; i < l; i++) {
				var child = vnode.children[i];
				if(isDef(child.tag) && (
						isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
					applyNS(child, ns, force);
				}
			}
		}
	}

	// ref #5318
	// necessary to ensure parent re-render when deep bindings like :style and
	// :class are used on slot nodes
	function registerDeepBindings(data) {
		if(isObject(data.style)) {
			traverse(data.style);
		}
		if(isObject(data.class)) {
			traverse(data.class);
		}
	}

	/*  */

	function initRender(vm) {
		vm._vnode = null; // the root of the child tree
		vm._staticTrees = null; // v-once cached trees
		var options = vm.$options;
		var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
		var renderContext = parentVnode && parentVnode.context;
		vm.$slots = resolveSlots(options._renderChildren, renderContext);
		vm.$scopedSlots = emptyObject;
		// bind the createElement fn to this instance
		// so that we get proper render context inside it.
		// args order: tag, data, children, normalizationType, alwaysNormalize
		// internal version is used by render functions compiled from templates
		vm._c = function(a, b, c, d) {
			return createElement(vm, a, b, c, d, false);
		};
		// normalization is always applied for the public version, used in
		// user-written render functions.
		vm.$createElement = function(a, b, c, d) {
			return createElement(vm, a, b, c, d, true);
		};

		// $attrs & $listeners are exposed for easier HOC creation.
		// they need to be reactive so that HOCs using them are always updated
		var parentData = parentVnode && parentVnode.data;

		/* istanbul ignore else */
		{
			defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function() {
				!isUpdatingChildComponent && warn("$attrs is readonly.", vm);
			}, true);
			defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function() {
				!isUpdatingChildComponent && warn("$listeners is readonly.", vm);
			}, true);
		}
	}

	var currentRenderingInstance = null;

	function renderMixin(Vue) {
		// install runtime convenience helpers
		installRenderHelpers(Vue.prototype);

		Vue.prototype.$nextTick = function(fn) {
			return nextTick(fn, this)
		};

		Vue.prototype._render = function() {
			var vm = this;
			var ref = vm.$options;
			var render = ref.render;
			var _parentVnode = ref._parentVnode;

			if(_parentVnode) {
				vm.$scopedSlots = normalizeScopedSlots(
					_parentVnode.data.scopedSlots,
					vm.$slots,
					vm.$scopedSlots
				);
			}

			// set parent vnode. this allows render functions to have access
			// to the data on the placeholder node.
			vm.$vnode = _parentVnode;
			// render self
			var vnode;
			try {
				// There's no need to maintain a stack because all render fns are called
				// separately from one another. Nested component's render fns are called
				// when parent component is patched.
				currentRenderingInstance = vm;
				vnode = render.call(vm._renderProxy, vm.$createElement);
			} catch(e) {
				handleError(e, vm, "render");
				// return error render result,
				// or previous vnode to prevent render error causing blank component
				/* istanbul ignore else */
				if(vm.$options.renderError) {
					try {
						vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
					} catch(e) {
						handleError(e, vm, "renderError");
						vnode = vm._vnode;
					}
				} else {
					vnode = vm._vnode;
				}
			} finally {
				currentRenderingInstance = null;
			}
			// if the returned array contains only a single node, allow it
			if(Array.isArray(vnode) && vnode.length === 1) {
				vnode = vnode[0];
			}
			// return empty vnode in case the render function errored out
			if(!(vnode instanceof VNode)) {
				if(Array.isArray(vnode)) {
					warn(
						'Multiple root nodes returned from render function. Render function ' +
						'should return a single root node.',
						vm
					);
				}
				vnode = createEmptyVNode();
			}
			// set parent
			vnode.parent = _parentVnode;
			return vnode
		};
	}

	/*  */

	function ensureCtor(comp, base) {
		if(
			comp.__esModule ||
			(hasSymbol && comp[Symbol.toStringTag] === 'Module')
		) {
			comp = comp.default;
		}
		return isObject(comp) ?
			base.extend(comp) :
			comp
	}

	function createAsyncPlaceholder(
		factory,
		data,
		context,
		children,
		tag
	) {
		var node = createEmptyVNode();
		node.asyncFactory = factory;
		node.asyncMeta = {
			data: data,
			context: context,
			children: children,
			tag: tag
		};
		return node
	}

	function resolveAsyncComponent(
		factory,
		baseCtor
	) {
		if(isTrue(factory.error) && isDef(factory.errorComp)) {
			return factory.errorComp
		}

		if(isDef(factory.resolved)) {
			return factory.resolved
		}

		var owner = currentRenderingInstance;
		if(owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
			// already pending
			factory.owners.push(owner);
		}

		if(isTrue(factory.loading) && isDef(factory.loadingComp)) {
			return factory.loadingComp
		}

		if(owner && !isDef(factory.owners)) {
			var owners = factory.owners = [owner];
			var sync = true;
			var timerLoading = null;
			var timerTimeout = null

			;
			(owner).$on('hook:destroyed', function() {
				return remove(owners, owner);
			});

			var forceRender = function(renderCompleted) {
				for(var i = 0, l = owners.length; i < l; i++) {
					(owners[i]).$forceUpdate();
				}

				if(renderCompleted) {
					owners.length = 0;
					if(timerLoading !== null) {
						clearTimeout(timerLoading);
						timerLoading = null;
					}
					if(timerTimeout !== null) {
						clearTimeout(timerTimeout);
						timerTimeout = null;
					}
				}
			};

			var resolve = once(function(res) {
				// cache resolved
				factory.resolved = ensureCtor(res, baseCtor);
				// invoke callbacks only if this is not a synchronous resolve
				// (async resolves are shimmed as synchronous during SSR)
				if(!sync) {
					forceRender(true);
				} else {
					owners.length = 0;
				}
			});

			var reject = once(function(reason) {
				warn(
					"Failed to resolve async component: " + (String(factory)) +
					(reason ? ("\nReason: " + reason) : '')
				);
				if(isDef(factory.errorComp)) {
					factory.error = true;
					forceRender(true);
				}
			});

			var res = factory(resolve, reject);

			if(isObject(res)) {
				if(isPromise(res)) {
					// () => Promise
					if(isUndef(factory.resolved)) {
						res.then(resolve, reject);
					}
				} else if(isPromise(res.component)) {
					res.component.then(resolve, reject);

					if(isDef(res.error)) {
						factory.errorComp = ensureCtor(res.error, baseCtor);
					}

					if(isDef(res.loading)) {
						factory.loadingComp = ensureCtor(res.loading, baseCtor);
						if(res.delay === 0) {
							factory.loading = true;
						} else {
							timerLoading = setTimeout(function() {
								timerLoading = null;
								if(isUndef(factory.resolved) && isUndef(factory.error)) {
									factory.loading = true;
									forceRender(false);
								}
							}, res.delay || 200);
						}
					}

					if(isDef(res.timeout)) {
						timerTimeout = setTimeout(function() {
							timerTimeout = null;
							if(isUndef(factory.resolved)) {
								reject(
									"timeout (" + (res.timeout) + "ms)"
								);
							}
						}, res.timeout);
					}
				}
			}

			sync = false;
			// return in case resolved synchronously
			return factory.loading ?
				factory.loadingComp :
				factory.resolved
		}
	}

	/*  */

	function isAsyncPlaceholder(node) {
		return node.isComment && node.asyncFactory
	}

	/*  */

	function getFirstComponentChild(children) {
		if(Array.isArray(children)) {
			for(var i = 0; i < children.length; i++) {
				var c = children[i];
				if(isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
					return c
				}
			}
		}
	}

	/*  */

	/*  */

	function initEvents(vm) {
		vm._events = Object.create(null);
		vm._hasHookEvent = false;
		// init parent attached events
		var listeners = vm.$options._parentListeners;
		if(listeners) {
			updateComponentListeners(vm, listeners);
		}
	}

	var target;

	function add(event, fn) {
		target.$on(event, fn);
	}

	function remove$1(event, fn) {
		target.$off(event, fn);
	}

	function createOnceHandler(event, fn) {
		var _target = target;
		return function onceHandler() {
			var res = fn.apply(null, arguments);
			if(res !== null) {
				_target.$off(event, onceHandler);
			}
		}
	}

	function updateComponentListeners(
		vm,
		listeners,
		oldListeners
	) {
		target = vm;
		updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
		target = undefined;
	}

	function eventsMixin(Vue) {
		var hookRE = /^hook:/;
		Vue.prototype.$on = function(event, fn) {
			var vm = this;
			if(Array.isArray(event)) {
				for(var i = 0, l = event.length; i < l; i++) {
					vm.$on(event[i], fn);
				}
			} else {
				(vm._events[event] || (vm._events[event] = [])).push(fn);
				// optimize hook:event cost by using a boolean flag marked at registration
				// instead of a hash lookup
				if(hookRE.test(event)) {
					vm._hasHookEvent = true;
				}
			}
			return vm
		};

		Vue.prototype.$once = function(event, fn) {
			var vm = this;

			function on() {
				vm.$off(event, on);
				fn.apply(vm, arguments);
			}
			on.fn = fn;
			vm.$on(event, on);
			return vm
		};

		Vue.prototype.$off = function(event, fn) {
			var vm = this;
			// all
			if(!arguments.length) {
				vm._events = Object.create(null);
				return vm
			}
			// array of events
			if(Array.isArray(event)) {
				for(var i$1 = 0, l = event.length; i$1 < l; i$1++) {
					vm.$off(event[i$1], fn);
				}
				return vm
			}
			// specific event
			var cbs = vm._events[event];
			if(!cbs) {
				return vm
			}
			if(!fn) {
				vm._events[event] = null;
				return vm
			}
			// specific handler
			var cb;
			var i = cbs.length;
			while(i--) {
				cb = cbs[i];
				if(cb === fn || cb.fn === fn) {
					cbs.splice(i, 1);
					break
				}
			}
			return vm
		};

		Vue.prototype.$emit = function(event) {
			var vm = this; {
				var lowerCaseEvent = event.toLowerCase();
				if(lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
					tip(
						"Event \"" + lowerCaseEvent + "\" is emitted in component " +
						(formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
						"Note that HTML attributes are case-insensitive and you cannot use " +
						"v-on to listen to camelCase events when using in-DOM templates. " +
						"You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
					);
				}
			}
			var cbs = vm._events[event];
			if(cbs) {
				cbs = cbs.length > 1 ? toArray(cbs) : cbs;
				var args = toArray(arguments, 1);
				var info = "event handler for \"" + event + "\"";
				for(var i = 0, l = cbs.length; i < l; i++) {
					invokeWithErrorHandling(cbs[i], vm, args, vm, info);
				}
			}
			return vm
		};
	}

	/*  */

	var activeInstance = null;
	var isUpdatingChildComponent = false;

	function setActiveInstance(vm) {
		var prevActiveInstance = activeInstance;
		activeInstance = vm;
		return function() {
			activeInstance = prevActiveInstance;
		}
	}

	function initLifecycle(vm) {
		var options = vm.$options;

		// locate first non-abstract parent
		var parent = options.parent;
		if(parent && !options.abstract) {
			while(parent.$options.abstract && parent.$parent) {
				parent = parent.$parent;
			}
			parent.$children.push(vm);
		}

		vm.$parent = parent;
		vm.$root = parent ? parent.$root : vm;

		vm.$children = [];
		vm.$refs = {};

		vm._watcher = null;
		vm._inactive = null;
		vm._directInactive = false;
		vm._isMounted = false;
		vm._isDestroyed = false;
		vm._isBeingDestroyed = false;
	}

	function lifecycleMixin(Vue) {
		Vue.prototype._update = function(vnode, hydrating) {
			var vm = this;
			var prevEl = vm.$el;
			var prevVnode = vm._vnode;
			var restoreActiveInstance = setActiveInstance(vm);
			vm._vnode = vnode;
			// Vue.prototype.__patch__ is injected in entry points
			// based on the rendering backend used.
			if(!prevVnode) {
				// initial render
				vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */ );
			} else {
				// updates
				vm.$el = vm.__patch__(prevVnode, vnode);
			}
			restoreActiveInstance();
			// update __vue__ reference
			if(prevEl) {
				prevEl.__vue__ = null;
			}
			if(vm.$el) {
				vm.$el.__vue__ = vm;
			}
			// if parent is an HOC, update its $el as well
			if(vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
				vm.$parent.$el = vm.$el;
			}
			// updated hook is called by the scheduler to ensure that children are
			// updated in a parent's updated hook.
		};

		Vue.prototype.$forceUpdate = function() {
			var vm = this;
			if(vm._watcher) {
				vm._watcher.update();
			}
		};

		Vue.prototype.$destroy = function() {
			var vm = this;
			if(vm._isBeingDestroyed) {
				return
			}
			callHook(vm, 'beforeDestroy');
			vm._isBeingDestroyed = true;
			// remove self from parent
			var parent = vm.$parent;
			if(parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
				remove(parent.$children, vm);
			}
			// teardown watchers
			if(vm._watcher) {
				vm._watcher.teardown();
			}
			var i = vm._watchers.length;
			while(i--) {
				vm._watchers[i].teardown();
			}
			// remove reference from data ob
			// frozen object may not have observer.
			if(vm._data.__ob__) {
				vm._data.__ob__.vmCount--;
			}
			// call the last hook...
			vm._isDestroyed = true;
			// invoke destroy hooks on current rendered tree
			vm.__patch__(vm._vnode, null);
			// fire destroyed hook
			callHook(vm, 'destroyed');
			// turn off all instance listeners.
			vm.$off();
			// remove __vue__ reference
			if(vm.$el) {
				vm.$el.__vue__ = null;
			}
			// release circular reference (#6759)
			if(vm.$vnode) {
				vm.$vnode.parent = null;
			}
		};
	}

	function mountComponent(
		vm,
		el,
		hydrating
	) {
		vm.$el = el;
		if(!vm.$options.render) {
			vm.$options.render = createEmptyVNode; {
				/* istanbul ignore if */
				if((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
					vm.$options.el || el) {
					warn(
						'You are using the runtime-only build of Vue where the template ' +
						'compiler is not available. Either pre-compile the templates into ' +
						'render functions, or use the compiler-included build.',
						vm
					);
				} else {
					warn(
						'Failed to mount component: template or render function not defined.',
						vm
					);
				}
			}
		}
		callHook(vm, 'beforeMount');

		var updateComponent;
		/* istanbul ignore if */
		if(config.performance && mark) {
			updateComponent = function() {
				var name = vm._name;
				var id = vm._uid;
				var startTag = "vue-perf-start:" + id;
				var endTag = "vue-perf-end:" + id;

				mark(startTag);
				var vnode = vm._render();
				mark(endTag);
				measure(("vue " + name + " render"), startTag, endTag);

				mark(startTag);
				vm._update(vnode, hydrating);
				mark(endTag);
				measure(("vue " + name + " patch"), startTag, endTag);
			};
		} else {
			updateComponent = function() {
				vm._update(vm._render(), hydrating);
			};
		}

		// we set this to vm._watcher inside the watcher's constructor
		// since the watcher's initial patch may call $forceUpdate (e.g. inside child
		// component's mounted hook), which relies on vm._watcher being already defined
		new Watcher(vm, updateComponent, noop, {
			before: function before() {
				if(vm._isMounted && !vm._isDestroyed) {
					callHook(vm, 'beforeUpdate');
				}
			}
		}, true /* isRenderWatcher */ );
		hydrating = false;

		// manually mounted instance, call mounted on self
		// mounted is called for render-created child components in its inserted hook
		if(vm.$vnode == null) {
			vm._isMounted = true;
			callHook(vm, 'mounted');
		}
		return vm
	}

	function updateChildComponent(
		vm,
		propsData,
		listeners,
		parentVnode,
		renderChildren
	) {
		{
			isUpdatingChildComponent = true;
		}

		// determine whether component has slot children
		// we need to do this before overwriting $options._renderChildren.

		// check if there are dynamic scopedSlots (hand-written or compiled but with
		// dynamic slot names). Static scoped slots compiled from template has the
		// "$stable" marker.
		var newScopedSlots = parentVnode.data.scopedSlots;
		var oldScopedSlots = vm.$scopedSlots;
		var hasDynamicScopedSlot = !!(
			(newScopedSlots && !newScopedSlots.$stable) ||
			(oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
			(newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
		);

		// Any static slot children from the parent may have changed during parent's
		// update. Dynamic scoped slots may also have changed. In such cases, a forced
		// update is necessary to ensure correctness.
		var needsForceUpdate = !!(
			renderChildren || // has new static slots
			vm.$options._renderChildren || // has old static slots
			hasDynamicScopedSlot
		);

		vm.$options._parentVnode = parentVnode;
		vm.$vnode = parentVnode; // update vm's placeholder node without re-render

		if(vm._vnode) { // update child tree's parent
			vm._vnode.parent = parentVnode;
		}
		vm.$options._renderChildren = renderChildren;

		// update $attrs and $listeners hash
		// these are also reactive so they may trigger child update if the child
		// used them during render
		vm.$attrs = parentVnode.data.attrs || emptyObject;
		vm.$listeners = listeners || emptyObject;

		// update props
		if(propsData && vm.$options.props) {
			toggleObserving(false);
			var props = vm._props;
			var propKeys = vm.$options._propKeys || [];
			for(var i = 0; i < propKeys.length; i++) {
				var key = propKeys[i];
				var propOptions = vm.$options.props; // wtf flow?
				props[key] = validateProp(key, propOptions, propsData, vm);
			}
			toggleObserving(true);
			// keep a copy of raw propsData
			vm.$options.propsData = propsData;
		}

		// update listeners
		listeners = listeners || emptyObject;
		var oldListeners = vm.$options._parentListeners;
		vm.$options._parentListeners = listeners;
		updateComponentListeners(vm, listeners, oldListeners);

		// resolve slots + force update if has children
		if(needsForceUpdate) {
			vm.$slots = resolveSlots(renderChildren, parentVnode.context);
			vm.$forceUpdate();
		}

		{
			isUpdatingChildComponent = false;
		}
	}

	function isInInactiveTree(vm) {
		while(vm && (vm = vm.$parent)) {
			if(vm._inactive) {
				return true
			}
		}
		return false
	}

	function activateChildComponent(vm, direct) {
		if(direct) {
			vm._directInactive = false;
			if(isInInactiveTree(vm)) {
				return
			}
		} else if(vm._directInactive) {
			return
		}
		if(vm._inactive || vm._inactive === null) {
			vm._inactive = false;
			for(var i = 0; i < vm.$children.length; i++) {
				activateChildComponent(vm.$children[i]);
			}
			callHook(vm, 'activated');
		}
	}

	function deactivateChildComponent(vm, direct) {
		if(direct) {
			vm._directInactive = true;
			if(isInInactiveTree(vm)) {
				return
			}
		}
		if(!vm._inactive) {
			vm._inactive = true;
			for(var i = 0; i < vm.$children.length; i++) {
				deactivateChildComponent(vm.$children[i]);
			}
			callHook(vm, 'deactivated');
		}
	}

	function callHook(vm, hook) {
		// #7573 disable dep collection when invoking lifecycle hooks
		pushTarget();
		var handlers = vm.$options[hook];
		var info = hook + " hook";
		if(handlers) {
			for(var i = 0, j = handlers.length; i < j; i++) {
				invokeWithErrorHandling(handlers[i], vm, null, vm, info);
			}
		}
		if(vm._hasHookEvent) {
			vm.$emit('hook:' + hook);
		}
		popTarget();
	}

	/*  */

	var MAX_UPDATE_COUNT = 100;

	var queue = [];
	var activatedChildren = [];
	var has = {};
	var circular = {};
	var waiting = false;
	var flushing = false;
	var index = 0;

	/**
	 * Reset the scheduler's state.
	 */
	function resetSchedulerState() {
		index = queue.length = activatedChildren.length = 0;
		has = {}; {
			circular = {};
		}
		waiting = flushing = false;
	}

	// Async edge case #6566 requires saving the timestamp when event listeners are
	// attached. However, calling performance.now() has a perf overhead especially
	// if the page has thousands of event listeners. Instead, we take a timestamp
	// every time the scheduler flushes and use that for all event listeners
	// attached during that flush.
	var currentFlushTimestamp = 0;

	// Async edge case fix requires storing an event listener's attach timestamp.
	var getNow = Date.now;

	// Determine what event timestamp the browser is using. Annoyingly, the
	// timestamp can either be hi-res (relative to page load) or low-res
	// (relative to UNIX epoch), so in order to compare time we have to use the
	// same timestamp type when saving the flush timestamp.
	// All IE versions use low-res event timestamps, and have problematic clock
	// implementations (#9632)
	if(inBrowser && !isIE) {
		var performance = window.performance;
		if(
			performance &&
			typeof performance.now === 'function' &&
			getNow() > document.createEvent('Event').timeStamp
		) {
			// if the event timestamp, although evaluated AFTER the Date.now(), is
			// smaller than it, it means the event is using a hi-res timestamp,
			// and we need to use the hi-res version for event listener timestamps as
			// well.
			getNow = function() {
				return performance.now();
			};
		}
	}

	/**
	 * Flush both queues and run the watchers.
	 */
	function flushSchedulerQueue() {
		currentFlushTimestamp = getNow();
		flushing = true;
		var watcher, id;

		// Sort queue before flush.
		// This ensures that:
		// 1. Components are updated from parent to child. (because parent is always
		//    created before the child)
		// 2. A component's user watchers are run before its render watcher (because
		//    user watchers are created before the render watcher)
		// 3. If a component is destroyed during a parent component's watcher run,
		//    its watchers can be skipped.
		queue.sort(function(a, b) {
			return a.id - b.id;
		});

		// do not cache length because more watchers might be pushed
		// as we run existing watchers
		for(index = 0; index < queue.length; index++) {
			watcher = queue[index];
			if(watcher.before) {
				watcher.before();
			}
			id = watcher.id;
			has[id] = null;
			watcher.run();
			// in dev build, check and stop circular updates.
			if(has[id] != null) {
				circular[id] = (circular[id] || 0) + 1;
				if(circular[id] > MAX_UPDATE_COUNT) {
					warn(
						'You may have an infinite update loop ' + (
							watcher.user ?
							("in watcher with expression \"" + (watcher.expression) + "\"") :
							"in a component render function."
						),
						watcher.vm
					);
					break
				}
			}
		}

		// keep copies of post queues before resetting state
		var activatedQueue = activatedChildren.slice();
		var updatedQueue = queue.slice();

		resetSchedulerState();

		// call component updated and activated hooks
		callActivatedHooks(activatedQueue);
		callUpdatedHooks(updatedQueue);

		// devtool hook
		/* istanbul ignore if */
		if(devtools && config.devtools) {
			devtools.emit('flush');
		}
	}

	function callUpdatedHooks(queue) {
		var i = queue.length;
		while(i--) {
			var watcher = queue[i];
			var vm = watcher.vm;
			if(vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
				callHook(vm, 'updated');
			}
		}
	}

	/**
	 * Queue a kept-alive component that was activated during patch.
	 * The queue will be processed after the entire tree has been patched.
	 */
	function queueActivatedComponent(vm) {
		// setting _inactive to false here so that a render function can
		// rely on checking whether it's in an inactive tree (e.g. router-view)
		vm._inactive = false;
		activatedChildren.push(vm);
	}

	function callActivatedHooks(queue) {
		for(var i = 0; i < queue.length; i++) {
			queue[i]._inactive = true;
			activateChildComponent(queue[i], true /* true */ );
		}
	}

	/**
	 * Push a watcher into the watcher queue.
	 * Jobs with duplicate IDs will be skipped unless it's
	 * pushed when the queue is being flushed.
	 */
	function queueWatcher(watcher) {
		var id = watcher.id;
		if(has[id] == null) {
			has[id] = true;
			if(!flushing) {
				queue.push(watcher);
			} else {
				// if already flushing, splice the watcher based on its id
				// if already past its id, it will be run next immediately.
				var i = queue.length - 1;
				while(i > index && queue[i].id > watcher.id) {
					i--;
				}
				queue.splice(i + 1, 0, watcher);
			}
			// queue the flush
			if(!waiting) {
				waiting = true;

				if(!config.async) {
					flushSchedulerQueue();
					return
				}
				nextTick(flushSchedulerQueue);
			}
		}
	}

	/*  */

	var uid$2 = 0;

	/**
	 * A watcher parses an expression, collects dependencies,
	 * and fires callback when the expression value changes.
	 * This is used for both the $watch() api and directives.
	 */
	var Watcher = function Watcher(
		vm,
		expOrFn,
		cb,
		options,
		isRenderWatcher
	) {
		this.vm = vm;
		if(isRenderWatcher) {
			vm._watcher = this;
		}
		vm._watchers.push(this);
		// options
		if(options) {
			this.deep = !!options.deep;
			this.user = !!options.user;
			this.lazy = !!options.lazy;
			this.sync = !!options.sync;
			this.before = options.before;
		} else {
			this.deep = this.user = this.lazy = this.sync = false;
		}
		this.cb = cb;
		this.id = ++uid$2; // uid for batching
		this.active = true;
		this.dirty = this.lazy; // for lazy watchers
		this.deps = [];
		this.newDeps = [];
		this.depIds = new _Set();
		this.newDepIds = new _Set();
		this.expression = expOrFn.toString();
		// parse expression for getter
		if(typeof expOrFn === 'function') {
			this.getter = expOrFn;
		} else {
			this.getter = parsePath(expOrFn);
			if(!this.getter) {
				this.getter = noop;
				warn(
					"Failed watching path: \"" + expOrFn + "\" " +
					'Watcher only accepts simple dot-delimited paths. ' +
					'For full control, use a function instead.',
					vm
				);
			}
		}
		this.value = this.lazy ?
			undefined :
			this.get();
	};

	/**
	 * Evaluate the getter, and re-collect dependencies.
	 */
	Watcher.prototype.get = function get() {
		pushTarget(this);
		var value;
		var vm = this.vm;
		try {
			value = this.getter.call(vm, vm);
		} catch(e) {
			if(this.user) {
				handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
			} else {
				throw e
			}
		} finally {
			// "touch" every property so they are all tracked as
			// dependencies for deep watching
			if(this.deep) {
				traverse(value);
			}
			popTarget();
			this.cleanupDeps();
		}
		return value
	};

	/**
	 * Add a dependency to this directive.
	 */
	Watcher.prototype.addDep = function addDep(dep) {
		var id = dep.id;
		if(!this.newDepIds.has(id)) {
			this.newDepIds.add(id);
			this.newDeps.push(dep);
			if(!this.depIds.has(id)) {
				dep.addSub(this);
			}
		}
	};

	/**
	 * Clean up for dependency collection.
	 */
	Watcher.prototype.cleanupDeps = function cleanupDeps() {
		var i = this.deps.length;
		while(i--) {
			var dep = this.deps[i];
			if(!this.newDepIds.has(dep.id)) {
				dep.removeSub(this);
			}
		}
		var tmp = this.depIds;
		this.depIds = this.newDepIds;
		this.newDepIds = tmp;
		this.newDepIds.clear();
		tmp = this.deps;
		this.deps = this.newDeps;
		this.newDeps = tmp;
		this.newDeps.length = 0;
	};

	/**
	 * Subscriber interface.
	 * Will be called when a dependency changes.
	 */
	Watcher.prototype.update = function update() {
		/* istanbul ignore else */
		if(this.lazy) {
			this.dirty = true;
		} else if(this.sync) {
			this.run();
		} else {
			queueWatcher(this);
		}
	};

	/**
	 * Scheduler job interface.
	 * Will be called by the scheduler.
	 */
	Watcher.prototype.run = function run() {
		if(this.active) {
			var value = this.get();
			if(
				value !== this.value ||
				// Deep watchers and watchers on Object/Arrays should fire even
				// when the value is the same, because the value may
				// have mutated.
				isObject(value) ||
				this.deep
			) {
				// set new value
				var oldValue = this.value;
				this.value = value;
				if(this.user) {
					try {
						this.cb.call(this.vm, value, oldValue);
					} catch(e) {
						handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
					}
				} else {
					this.cb.call(this.vm, value, oldValue);
				}
			}
		}
	};

	/**
	 * Evaluate the value of the watcher.
	 * This only gets called for lazy watchers.
	 */
	Watcher.prototype.evaluate = function evaluate() {
		this.value = this.get();
		this.dirty = false;
	};

	/**
	 * Depend on all deps collected by this watcher.
	 */
	Watcher.prototype.depend = function depend() {
		var i = this.deps.length;
		while(i--) {
			this.deps[i].depend();
		}
	};

	/**
	 * Remove self from all dependencies' subscriber list.
	 */
	Watcher.prototype.teardown = function teardown() {
		if(this.active) {
			// remove self from vm's watcher list
			// this is a somewhat expensive operation so we skip it
			// if the vm is being destroyed.
			if(!this.vm._isBeingDestroyed) {
				remove(this.vm._watchers, this);
			}
			var i = this.deps.length;
			while(i--) {
				this.deps[i].removeSub(this);
			}
			this.active = false;
		}
	};

	/*  */

	var sharedPropertyDefinition = {
		enumerable: true,
		configurable: true,
		get: noop,
		set: noop
	};

	function proxy(target, sourceKey, key) {
		sharedPropertyDefinition.get = function proxyGetter() {
			return this[sourceKey][key]
		};
		sharedPropertyDefinition.set = function proxySetter(val) {
			this[sourceKey][key] = val;
		};
		Object.defineProperty(target, key, sharedPropertyDefinition);
	}

	function initState(vm) {
		vm._watchers = [];
		var opts = vm.$options;
		if(opts.props) {
			initProps(vm, opts.props);
		}
		if(opts.methods) {
			initMethods(vm, opts.methods);
		}
		if(opts.data) {
			initData(vm);
		} else {
			observe(vm._data = {}, true /* asRootData */ );
		}
		if(opts.computed) {
			initComputed(vm, opts.computed);
		}
		if(opts.watch && opts.watch !== nativeWatch) {
			initWatch(vm, opts.watch);
		}
	}

	function initProps(vm, propsOptions) {
		var propsData = vm.$options.propsData || {};
		var props = vm._props = {};
		// cache prop keys so that future props updates can iterate using Array
		// instead of dynamic object key enumeration.
		var keys = vm.$options._propKeys = [];
		var isRoot = !vm.$parent;
		// root instance props should be converted
		if(!isRoot) {
			toggleObserving(false);
		}
		var loop = function(key) {
			keys.push(key);
			var value = validateProp(key, propsOptions, propsData, vm);
			/* istanbul ignore else */
			{
				var hyphenatedKey = hyphenate(key);
				if(isReservedAttribute(hyphenatedKey) ||
					config.isReservedAttr(hyphenatedKey)) {
					warn(
						("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
						vm
					);
				}
				defineReactive$$1(props, key, value, function() {
					if(!isRoot && !isUpdatingChildComponent) {
						warn(
							"Avoid mutating a prop directly since the value will be " +
							"overwritten whenever the parent component re-renders. " +
							"Instead, use a data or computed property based on the prop's " +
							"value. Prop being mutated: \"" + key + "\"",
							vm
						);
					}
				});
			}
			// static props are already proxied on the component's prototype
			// during Vue.extend(). We only need to proxy props defined at
			// instantiation here.
			if(!(key in vm)) {
				proxy(vm, "_props", key);
			}
		};

		for(var key in propsOptions) loop(key);
		toggleObserving(true);
	}

	function initData(vm) {
		var data = vm.$options.data;
		data = vm._data = typeof data === 'function' ?
			getData(data, vm) :
			data || {};
		if(!isPlainObject(data)) {
			data = {};
			warn(
				'data functions should return an object:\n' +
				'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
				vm
			);
		}
		// proxy data on instance
		var keys = Object.keys(data);
		var props = vm.$options.props;
		var methods = vm.$options.methods;
		var i = keys.length;
		while(i--) {
			var key = keys[i]; {
				if(methods && hasOwn(methods, key)) {
					warn(
						("Method \"" + key + "\" has already been defined as a data property."),
						vm
					);
				}
			}
			if(props && hasOwn(props, key)) {
				warn(
					"The data property \"" + key + "\" is already declared as a prop. " +
					"Use prop default value instead.",
					vm
				);
			} else if(!isReserved(key)) {
				proxy(vm, "_data", key);
			}
		}
		// observe data
		observe(data, true /* asRootData */ );
	}

	function getData(data, vm) {
		// #7573 disable dep collection when invoking data getters
		pushTarget();
		try {
			return data.call(vm, vm)
		} catch(e) {
			handleError(e, vm, "data()");
			return {}
		} finally {
			popTarget();
		}
	}

	var computedWatcherOptions = {
		lazy: true
	};

	function initComputed(vm, computed) {
		// $flow-disable-line
		var watchers = vm._computedWatchers = Object.create(null);
		// computed properties are just getters during SSR
		var isSSR = isServerRendering();

		for(var key in computed) {
			var userDef = computed[key];
			var getter = typeof userDef === 'function' ? userDef : userDef.get;
			if(getter == null) {
				warn(
					("Getter is missing for computed property \"" + key + "\"."),
					vm
				);
			}

			if(!isSSR) {
				// create internal watcher for the computed property.
				watchers[key] = new Watcher(
					vm,
					getter || noop,
					noop,
					computedWatcherOptions
				);
			}

			// component-defined computed properties are already defined on the
			// component prototype. We only need to define computed properties defined
			// at instantiation here.
			if(!(key in vm)) {
				defineComputed(vm, key, userDef);
			} else {
				if(key in vm.$data) {
					warn(("The computed property \"" + key + "\" is already defined in data."), vm);
				} else if(vm.$options.props && key in vm.$options.props) {
					warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
				}
			}
		}
	}

	function defineComputed(
		target,
		key,
		userDef
	) {
		var shouldCache = !isServerRendering();
		if(typeof userDef === 'function') {
			sharedPropertyDefinition.get = shouldCache ?
				createComputedGetter(key) :
				createGetterInvoker(userDef);
			sharedPropertyDefinition.set = noop;
		} else {
			sharedPropertyDefinition.get = userDef.get ?
				shouldCache && userDef.cache !== false ?
				createComputedGetter(key) :
				createGetterInvoker(userDef.get) :
				noop;
			sharedPropertyDefinition.set = userDef.set || noop;
		}
		if(sharedPropertyDefinition.set === noop) {
			sharedPropertyDefinition.set = function() {
				warn(
					("Computed property \"" + key + "\" was assigned to but it has no setter."),
					this
				);
			};
		}
		Object.defineProperty(target, key, sharedPropertyDefinition);
	}

	function createComputedGetter(key) {
		return function computedGetter() {
			var watcher = this._computedWatchers && this._computedWatchers[key];
			if(watcher) {
				if(watcher.dirty) {
					watcher.evaluate();
				}
				if(Dep.target) {
					watcher.depend();
				}
				return watcher.value
			}
		}
	}

	function createGetterInvoker(fn) {
		return function computedGetter() {
			return fn.call(this, this)
		}
	}

	function initMethods(vm, methods) {
		var props = vm.$options.props;
		for(var key in methods) {
			{
				if(typeof methods[key] !== 'function') {
					warn(
						"Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
						"Did you reference the function correctly?",
						vm
					);
				}
				if(props && hasOwn(props, key)) {
					warn(
						("Method \"" + key + "\" has already been defined as a prop."),
						vm
					);
				}
				if((key in vm) && isReserved(key)) {
					warn(
						"Method \"" + key + "\" conflicts with an existing Vue instance method. " +
						"Avoid defining component methods that start with _ or $."
					);
				}
			}
			vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
		}
	}

	function initWatch(vm, watch) {
		for(var key in watch) {
			var handler = watch[key];
			if(Array.isArray(handler)) {
				for(var i = 0; i < handler.length; i++) {
					createWatcher(vm, key, handler[i]);
				}
			} else {
				createWatcher(vm, key, handler);
			}
		}
	}

	function createWatcher(
		vm,
		expOrFn,
		handler,
		options
	) {
		if(isPlainObject(handler)) {
			options = handler;
			handler = handler.handler;
		}
		if(typeof handler === 'string') {
			handler = vm[handler];
		}
		return vm.$watch(expOrFn, handler, options)
	}

	function stateMixin(Vue) {
		// flow somehow has problems with directly declared definition object
		// when using Object.defineProperty, so we have to procedurally build up
		// the object here.
		var dataDef = {};
		dataDef.get = function() {
			return this._data
		};
		var propsDef = {};
		propsDef.get = function() {
			return this._props
		}; {
			dataDef.set = function() {
				warn(
					'Avoid replacing instance root $data. ' +
					'Use nested data properties instead.',
					this
				);
			};
			propsDef.set = function() {
				warn("$props is readonly.", this);
			};
		}
		Object.defineProperty(Vue.prototype, '$data', dataDef);
		Object.defineProperty(Vue.prototype, '$props', propsDef);

		Vue.prototype.$set = set;
		Vue.prototype.$delete = del;

		Vue.prototype.$watch = function(
			expOrFn,
			cb,
			options
		) {
			var vm = this;
			if(isPlainObject(cb)) {
				return createWatcher(vm, expOrFn, cb, options)
			}
			options = options || {};
			options.user = true;
			var watcher = new Watcher(vm, expOrFn, cb, options);
			if(options.immediate) {
				try {
					cb.call(vm, watcher.value);
				} catch(error) {
					handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
				}
			}
			return function unwatchFn() {
				watcher.teardown();
			}
		};
	}

	/*  */

	var uid$3 = 0;

	function initMixin(Vue) {
		Vue.prototype._init = function(options) {
			var vm = this;
			// a uid
			vm._uid = uid$3++;

			var startTag, endTag;
			/* istanbul ignore if */
			if(config.performance && mark) {
				startTag = "vue-perf-start:" + (vm._uid);
				endTag = "vue-perf-end:" + (vm._uid);
				mark(startTag);
			}

			// a flag to avoid this being observed
			vm._isVue = true;
			// merge options
			if(options && options._isComponent) {
				// optimize internal component instantiation
				// since dynamic options merging is pretty slow, and none of the
				// internal component options needs special treatment.
				initInternalComponent(vm, options);
			} else {
				vm.$options = mergeOptions(
					resolveConstructorOptions(vm.constructor),
					options || {},
					vm
				);
			}
			/* istanbul ignore else */
			{
				initProxy(vm);
			}
			// expose real self
			vm._self = vm;
			initLifecycle(vm);
			initEvents(vm);
			initRender(vm);
			callHook(vm, 'beforeCreate');
			initInjections(vm); // resolve injections before data/props
			initState(vm);
			initProvide(vm); // resolve provide after data/props
			callHook(vm, 'created');

			/* istanbul ignore if */
			if(config.performance && mark) {
				vm._name = formatComponentName(vm, false);
				mark(endTag);
				measure(("vue " + (vm._name) + " init"), startTag, endTag);
			}

			if(vm.$options.el) {
				vm.$mount(vm.$options.el);
			}
		};
	}

	function initInternalComponent(vm, options) {
		var opts = vm.$options = Object.create(vm.constructor.options);
		// doing this because it's faster than dynamic enumeration.
		var parentVnode = options._parentVnode;
		opts.parent = options.parent;
		opts._parentVnode = parentVnode;

		var vnodeComponentOptions = parentVnode.componentOptions;
		opts.propsData = vnodeComponentOptions.propsData;
		opts._parentListeners = vnodeComponentOptions.listeners;
		opts._renderChildren = vnodeComponentOptions.children;
		opts._componentTag = vnodeComponentOptions.tag;

		if(options.render) {
			opts.render = options.render;
			opts.staticRenderFns = options.staticRenderFns;
		}
	}

	function resolveConstructorOptions(Ctor) {
		var options = Ctor.options;
		if(Ctor.super) {
			var superOptions = resolveConstructorOptions(Ctor.super);
			var cachedSuperOptions = Ctor.superOptions;
			if(superOptions !== cachedSuperOptions) {
				// super option changed,
				// need to resolve new options.
				Ctor.superOptions = superOptions;
				// check if there are any late-modified/attached options (#4976)
				var modifiedOptions = resolveModifiedOptions(Ctor);
				// update base extend options
				if(modifiedOptions) {
					extend(Ctor.extendOptions, modifiedOptions);
				}
				options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
				if(options.name) {
					options.components[options.name] = Ctor;
				}
			}
		}
		return options
	}

	function resolveModifiedOptions(Ctor) {
		var modified;
		var latest = Ctor.options;
		var sealed = Ctor.sealedOptions;
		for(var key in latest) {
			if(latest[key] !== sealed[key]) {
				if(!modified) {
					modified = {};
				}
				modified[key] = latest[key];
			}
		}
		return modified
	}

	function Vue(options) {
		if(!(this instanceof Vue)) {
			warn('Vue is a constructor and should be called with the `new` keyword');
		}
		this._init(options);
	}

	initMixin(Vue);
	stateMixin(Vue);
	eventsMixin(Vue);
	lifecycleMixin(Vue);
	renderMixin(Vue);

	/*  */

	function initUse(Vue) {
		Vue.use = function(plugin) {
			var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
			if(installedPlugins.indexOf(plugin) > -1) {
				return this
			}

			// additional parameters
			var args = toArray(arguments, 1);
			args.unshift(this);
			if(typeof plugin.install === 'function') {
				plugin.install.apply(plugin, args);
			} else if(typeof plugin === 'function') {
				plugin.apply(null, args);
			}
			installedPlugins.push(plugin);
			return this
		};
	}

	/*  */

	function initMixin$1(Vue) {
		Vue.mixin = function(mixin) {
			this.options = mergeOptions(this.options, mixin);
			return this
		};
	}

	/*  */

	function initExtend(Vue) {
		/**
		 * Each instance constructor, including Vue, has a unique
		 * cid. This enables us to create wrapped "child
		 * constructors" for prototypal inheritance and cache them.
		 */
		Vue.cid = 0;
		var cid = 1;

		/**
		 * Class inheritance
		 */
		Vue.extend = function(extendOptions) {
			extendOptions = extendOptions || {};
			var Super = this;
			var SuperId = Super.cid;
			var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
			if(cachedCtors[SuperId]) {
				return cachedCtors[SuperId]
			}

			var name = extendOptions.name || Super.options.name;
			if(name) {
				validateComponentName(name);
			}

			var Sub = function VueComponent(options) {
				this._init(options);
			};
			Sub.prototype = Object.create(Super.prototype);
			Sub.prototype.constructor = Sub;
			Sub.cid = cid++;
			Sub.options = mergeOptions(
				Super.options,
				extendOptions
			);
			Sub['super'] = Super;

			// For props and computed properties, we define the proxy getters on
			// the Vue instances at extension time, on the extended prototype. This
			// avoids Object.defineProperty calls for each instance created.
			if(Sub.options.props) {
				initProps$1(Sub);
			}
			if(Sub.options.computed) {
				initComputed$1(Sub);
			}

			// allow further extension/mixin/plugin usage
			Sub.extend = Super.extend;
			Sub.mixin = Super.mixin;
			Sub.use = Super.use;

			// create asset registers, so extended classes
			// can have their private assets too.
			ASSET_TYPES.forEach(function(type) {
				Sub[type] = Super[type];
			});
			// enable recursive self-lookup
			if(name) {
				Sub.options.components[name] = Sub;
			}

			// keep a reference to the super options at extension time.
			// later at instantiation we can check if Super's options have
			// been updated.
			Sub.superOptions = Super.options;
			Sub.extendOptions = extendOptions;
			Sub.sealedOptions = extend({}, Sub.options);

			// cache constructor
			cachedCtors[SuperId] = Sub;
			return Sub
		};
	}

	function initProps$1(Comp) {
		var props = Comp.options.props;
		for(var key in props) {
			proxy(Comp.prototype, "_props", key);
		}
	}

	function initComputed$1(Comp) {
		var computed = Comp.options.computed;
		for(var key in computed) {
			defineComputed(Comp.prototype, key, computed[key]);
		}
	}

	/*  */

	function initAssetRegisters(Vue) {
		/**
		 * Create asset registration methods.
		 */
		ASSET_TYPES.forEach(function(type) {
			Vue[type] = function(
				id,
				definition
			) {
				if(!definition) {
					return this.options[type + 's'][id]
				} else {
					/* istanbul ignore if */
					if(type === 'component') {
						validateComponentName(id);
					}
					if(type === 'component' && isPlainObject(definition)) {
						definition.name = definition.name || id;
						definition = this.options._base.extend(definition);
					}
					if(type === 'directive' && typeof definition === 'function') {
						definition = {
							bind: definition,
							update: definition
						};
					}
					this.options[type + 's'][id] = definition;
					return definition
				}
			};
		});
	}

	/*  */

	function getComponentName(opts) {
		return opts && (opts.Ctor.options.name || opts.tag)
	}

	function matches(pattern, name) {
		if(Array.isArray(pattern)) {
			return pattern.indexOf(name) > -1
		} else if(typeof pattern === 'string') {
			return pattern.split(',').indexOf(name) > -1
		} else if(isRegExp(pattern)) {
			return pattern.test(name)
		}
		/* istanbul ignore next */
		return false
	}

	function pruneCache(keepAliveInstance, filter) {
		var cache = keepAliveInstance.cache;
		var keys = keepAliveInstance.keys;
		var _vnode = keepAliveInstance._vnode;
		for(var key in cache) {
			var cachedNode = cache[key];
			if(cachedNode) {
				var name = getComponentName(cachedNode.componentOptions);
				if(name && !filter(name)) {
					pruneCacheEntry(cache, key, keys, _vnode);
				}
			}
		}
	}

	function pruneCacheEntry(
		cache,
		key,
		keys,
		current
	) {
		var cached$$1 = cache[key];
		if(cached$$1 && (!current || cached$$1.tag !== current.tag)) {
			cached$$1.componentInstance.$destroy();
		}
		cache[key] = null;
		remove(keys, key);
	}

	var patternTypes = [String, RegExp, Array];

	var KeepAlive = {
		name: 'keep-alive',
		abstract: true,

		props: {
			include: patternTypes,
			exclude: patternTypes,
			max: [String, Number]
		},

		created: function created() {
			this.cache = Object.create(null);
			this.keys = [];
		},

		destroyed: function destroyed() {
			for(var key in this.cache) {
				pruneCacheEntry(this.cache, key, this.keys);
			}
		},

		mounted: function mounted() {
			var this$1 = this;

			this.$watch('include', function(val) {
				pruneCache(this$1, function(name) {
					return matches(val, name);
				});
			});
			this.$watch('exclude', function(val) {
				pruneCache(this$1, function(name) {
					return !matches(val, name);
				});
			});
		},

		render: function render() {
			var slot = this.$slots.default;
			var vnode = getFirstComponentChild(slot);
			var componentOptions = vnode && vnode.componentOptions;
			if(componentOptions) {
				// check pattern
				var name = getComponentName(componentOptions);
				var ref = this;
				var include = ref.include;
				var exclude = ref.exclude;
				if(
					// not included
					(include && (!name || !matches(include, name))) ||
					// excluded
					(exclude && name && matches(exclude, name))
				) {
					return vnode
				}

				var ref$1 = this;
				var cache = ref$1.cache;
				var keys = ref$1.keys;
				var key = vnode.key == null
					// same constructor may get registered as different local components
					// so cid alone is not enough (#3269)
					?
					componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '') :
					vnode.key;
				if(cache[key]) {
					vnode.componentInstance = cache[key].componentInstance;
					// make current key freshest
					remove(keys, key);
					keys.push(key);
				} else {
					cache[key] = vnode;
					keys.push(key);
					// prune oldest entry
					if(this.max && keys.length > parseInt(this.max)) {
						pruneCacheEntry(cache, keys[0], keys, this._vnode);
					}
				}

				vnode.data.keepAlive = true;
			}
			return vnode || (slot && slot[0])
		}
	};

	var builtInComponents = {
		KeepAlive: KeepAlive
	};

	/*  */

	function initGlobalAPI(Vue) {
		// config
		var configDef = {};
		configDef.get = function() {
			return config;
		}; {
			configDef.set = function() {
				warn(
					'Do not replace the Vue.config object, set individual fields instead.'
				);
			};
		}
		Object.defineProperty(Vue, 'config', configDef);

		// exposed util methods.
		// NOTE: these are not considered part of the public API - avoid relying on
		// them unless you are aware of the risk.
		Vue.util = {
			warn: warn,
			extend: extend,
			mergeOptions: mergeOptions,
			defineReactive: defineReactive$$1
		};

		Vue.set = set;
		Vue.delete = del;
		Vue.nextTick = nextTick;

		// 2.6 explicit observable API
		Vue.observable = function(obj) {
			observe(obj);
			return obj
		};

		Vue.options = Object.create(null);
		ASSET_TYPES.forEach(function(type) {
			Vue.options[type + 's'] = Object.create(null);
		});

		// this is used to identify the "base" constructor to extend all plain-object
		// components with in Weex's multi-instance scenarios.
		Vue.options._base = Vue;

		extend(Vue.options.components, builtInComponents);

		initUse(Vue);
		initMixin$1(Vue);
		initExtend(Vue);
		initAssetRegisters(Vue);
	}

	initGlobalAPI(Vue);

	Object.defineProperty(Vue.prototype, '$isServer', {
		get: isServerRendering
	});

	Object.defineProperty(Vue.prototype, '$ssrContext', {
		get: function get() {
			/* istanbul ignore next */
			return this.$vnode && this.$vnode.ssrContext
		}
	});

	// expose FunctionalRenderContext for ssr runtime helper installation
	Object.defineProperty(Vue, 'FunctionalRenderContext', {
		value: FunctionalRenderContext
	});

	Vue.version = '2.6.12';

	/*  */

	// these are reserved for web because they are directly compiled away
	// during template compilation
	var isReservedAttr = makeMap('style,class');

	// attributes that should be using props for binding
	var acceptValue = makeMap('input,textarea,option,select,progress');
	var mustUseProp = function(tag, type, attr) {
		return(
			(attr === 'value' && acceptValue(tag)) && type !== 'button' ||
			(attr === 'selected' && tag === 'option') ||
			(attr === 'checked' && tag === 'input') ||
			(attr === 'muted' && tag === 'video')
		)
	};

	var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');

	var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');

	var convertEnumeratedValue = function(key, value) {
		return isFalsyAttrValue(value) || value === 'false' ?
			'false'
			// allow arbitrary string value for contenteditable
			:
			key === 'contenteditable' && isValidContentEditableValue(value) ?
			value :
			'true'
	};

	var isBooleanAttr = makeMap(
		'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
		'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
		'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
		'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
		'required,reversed,scoped,seamless,selected,sortable,translate,' +
		'truespeed,typemustmatch,visible'
	);

	var xlinkNS = 'http://www.w3.org/1999/xlink';

	var isXlink = function(name) {
		return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
	};

	var getXlinkProp = function(name) {
		return isXlink(name) ? name.slice(6, name.length) : ''
	};

	var isFalsyAttrValue = function(val) {
		return val == null || val === false
	};

	/*  */

	function genClassForVnode(vnode) {
		var data = vnode.data;
		var parentNode = vnode;
		var childNode = vnode;
		while(isDef(childNode.componentInstance)) {
			childNode = childNode.componentInstance._vnode;
			if(childNode && childNode.data) {
				data = mergeClassData(childNode.data, data);
			}
		}
		while(isDef(parentNode = parentNode.parent)) {
			if(parentNode && parentNode.data) {
				data = mergeClassData(data, parentNode.data);
			}
		}
		return renderClass(data.staticClass, data.class)
	}

	function mergeClassData(child, parent) {
		return {
			staticClass: concat(child.staticClass, parent.staticClass),
			class: isDef(child.class) ?
				[child.class, parent.class] :
				parent.class
		}
	}

	function renderClass(
		staticClass,
		dynamicClass
	) {
		if(isDef(staticClass) || isDef(dynamicClass)) {
			return concat(staticClass, stringifyClass(dynamicClass))
		}
		/* istanbul ignore next */
		return ''
	}

	function concat(a, b) {
		return a ? b ? (a + ' ' + b) : a : (b || '')
	}

	function stringifyClass(value) {
		if(Array.isArray(value)) {
			return stringifyArray(value)
		}
		if(isObject(value)) {
			return stringifyObject(value)
		}
		if(typeof value === 'string') {
			return value
		}
		/* istanbul ignore next */
		return ''
	}

	function stringifyArray(value) {
		var res = '';
		var stringified;
		for(var i = 0, l = value.length; i < l; i++) {
			if(isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
				if(res) {
					res += ' ';
				}
				res += stringified;
			}
		}
		return res
	}

	function stringifyObject(value) {
		var res = '';
		for(var key in value) {
			if(value[key]) {
				if(res) {
					res += ' ';
				}
				res += key;
			}
		}
		return res
	}

	/*  */

	var namespaceMap = {
		svg: 'http://www.w3.org/2000/svg',
		math: 'http://www.w3.org/1998/Math/MathML'
	};

	var isHTMLTag = makeMap(
		'html,body,base,head,link,meta,style,title,' +
		'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
		'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
		'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
		's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
		'embed,object,param,source,canvas,script,noscript,del,ins,' +
		'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
		'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
		'output,progress,select,textarea,' +
		'details,dialog,menu,menuitem,summary,' +
		'content,element,shadow,template,blockquote,iframe,tfoot'
	);

	// this map is intentionally selective, only covering SVG elements that may
	// contain child elements.
	var isSVG = makeMap(
		'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
		'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
		'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
		true
	);

	var isPreTag = function(tag) {
		return tag === 'pre';
	};

	var isReservedTag = function(tag) {
		return isHTMLTag(tag) || isSVG(tag)
	};

	function getTagNamespace(tag) {
		if(isSVG(tag)) {
			return 'svg'
		}
		// basic support for MathML
		// note it doesn't support other MathML elements being component roots
		if(tag === 'math') {
			return 'math'
		}
	}

	var unknownElementCache = Object.create(null);

	function isUnknownElement(tag) {
		/* istanbul ignore if */
		if(!inBrowser) {
			return true
		}
		if(isReservedTag(tag)) {
			return false
		}
		tag = tag.toLowerCase();
		/* istanbul ignore if */
		if(unknownElementCache[tag] != null) {
			return unknownElementCache[tag]
		}
		var el = document.createElement(tag);
		if(tag.indexOf('-') > -1) {
			// http://stackoverflow.com/a/28210364/1070244
			return(unknownElementCache[tag] = (
				el.constructor === window.HTMLUnknownElement ||
				el.constructor === window.HTMLElement
			))
		} else {
			return(unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
		}
	}

	var isTextInputType = makeMap('text,number,password,search,email,tel,url');

	/*  */

	/**
	 * Query an element selector if it's not an element already.
	 */
	function query(el) {
		if(typeof el === 'string') {
			var selected = document.querySelector(el);
			if(!selected) {
				warn(
					'Cannot find element: ' + el
				);
				return document.createElement('div')
			}
			return selected
		} else {
			return el
		}
	}

	/*  */

	function createElement$1(tagName, vnode) {
		var elm = document.createElement(tagName);
		if(tagName !== 'select') {
			return elm
		}
		// false or null will remove the attribute but undefined will not
		if(vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
			elm.setAttribute('multiple', 'multiple');
		}
		return elm
	}

	function createElementNS(namespace, tagName) {
		return document.createElementNS(namespaceMap[namespace], tagName)
	}

	function createTextNode(text) {
		return document.createTextNode(text)
	}

	function createComment(text) {
		return document.createComment(text)
	}

	function insertBefore(parentNode, newNode, referenceNode) {
		parentNode.insertBefore(newNode, referenceNode);
	}

	function removeChild(node, child) {
		node.removeChild(child);
	}

	function appendChild(node, child) {
		node.appendChild(child);
	}

	function parentNode(node) {
		return node.parentNode
	}

	function nextSibling(node) {
		return node.nextSibling
	}

	function tagName(node) {
		return node.tagName
	}

	function setTextContent(node, text) {
		node.textContent = text;
	}

	function setStyleScope(node, scopeId) {
		node.setAttribute(scopeId, '');
	}

	var nodeOps = /*#__PURE__*/ Object.freeze({
		createElement: createElement$1,
		createElementNS: createElementNS,
		createTextNode: createTextNode,
		createComment: createComment,
		insertBefore: insertBefore,
		removeChild: removeChild,
		appendChild: appendChild,
		parentNode: parentNode,
		nextSibling: nextSibling,
		tagName: tagName,
		setTextContent: setTextContent,
		setStyleScope: setStyleScope
	});

	/*  */

	var ref = {
		create: function create(_, vnode) {
			registerRef(vnode);
		},
		update: function update(oldVnode, vnode) {
			if(oldVnode.data.ref !== vnode.data.ref) {
				registerRef(oldVnode, true);
				registerRef(vnode);
			}
		},
		destroy: function destroy(vnode) {
			registerRef(vnode, true);
		}
	};

	function registerRef(vnode, isRemoval) {
		var key = vnode.data.ref;
		if(!isDef(key)) {
			return
		}

		var vm = vnode.context;
		var ref = vnode.componentInstance || vnode.elm;
		var refs = vm.$refs;
		if(isRemoval) {
			if(Array.isArray(refs[key])) {
				remove(refs[key], ref);
			} else if(refs[key] === ref) {
				refs[key] = undefined;
			}
		} else {
			if(vnode.data.refInFor) {
				if(!Array.isArray(refs[key])) {
					refs[key] = [ref];
				} else if(refs[key].indexOf(ref) < 0) {
					// $flow-disable-line
					refs[key].push(ref);
				}
			} else {
				refs[key] = ref;
			}
		}
	}

	/**
	 * Virtual DOM patching algorithm based on Snabbdom by
	 * Simon Friis Vindum (@paldepind)
	 * Licensed under the MIT License
	 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
	 *
	 * modified by Evan You (@yyx990803)
	 *
	 * Not type-checking this because this file is perf-critical and the cost
	 * of making flow understand it is not worth it.
	 */

	var emptyNode = new VNode('', {}, []);

	var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];

	function sameVnode(a, b) {
		return(
			a.key === b.key && (
				(
					a.tag === b.tag &&
					a.isComment === b.isComment &&
					isDef(a.data) === isDef(b.data) &&
					sameInputType(a, b)
				) || (
					isTrue(a.isAsyncPlaceholder) &&
					a.asyncFactory === b.asyncFactory &&
					isUndef(b.asyncFactory.error)
				)
			)
		)
	}

	function sameInputType(a, b) {
		if(a.tag !== 'input') {
			return true
		}
		var i;
		var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
		var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
		return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
	}

	function createKeyToOldIdx(children, beginIdx, endIdx) {
		var i, key;
		var map = {};
		for(i = beginIdx; i <= endIdx; ++i) {
			key = children[i].key;
			if(isDef(key)) {
				map[key] = i;
			}
		}
		return map
	}

	function createPatchFunction(backend) {
		var i, j;
		var cbs = {};

		var modules = backend.modules;
		var nodeOps = backend.nodeOps;

		for(i = 0; i < hooks.length; ++i) {
			cbs[hooks[i]] = [];
			for(j = 0; j < modules.length; ++j) {
				if(isDef(modules[j][hooks[i]])) {
					cbs[hooks[i]].push(modules[j][hooks[i]]);
				}
			}
		}

		function emptyNodeAt(elm) {
			return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
		}

		function createRmCb(childElm, listeners) {
			function remove$$1() {
				if(--remove$$1.listeners === 0) {
					removeNode(childElm);
				}
			}
			remove$$1.listeners = listeners;
			return remove$$1
		}

		function removeNode(el) {
			var parent = nodeOps.parentNode(el);
			// element may have already been removed due to v-html / v-text
			if(isDef(parent)) {
				nodeOps.removeChild(parent, el);
			}
		}

		function isUnknownElement$$1(vnode, inVPre) {
			return(!inVPre &&
				!vnode.ns &&
				!(
					config.ignoredElements.length &&
					config.ignoredElements.some(function(ignore) {
						return isRegExp(ignore) ?
							ignore.test(vnode.tag) :
							ignore === vnode.tag
					})
				) &&
				config.isUnknownElement(vnode.tag)
			)
		}

		var creatingElmInVPre = 0;

		function createElm(
			vnode,
			insertedVnodeQueue,
			parentElm,
			refElm,
			nested,
			ownerArray,
			index
		) {
			if(isDef(vnode.elm) && isDef(ownerArray)) {
				// This vnode was used in a previous render!
				// now it's used as a new node, overwriting its elm would cause
				// potential patch errors down the road when it's used as an insertion
				// reference node. Instead, we clone the node on-demand before creating
				// associated DOM element for it.
				vnode = ownerArray[index] = cloneVNode(vnode);
			}

			vnode.isRootInsert = !nested; // for transition enter check
			if(createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
				return
			}

			var data = vnode.data;
			var children = vnode.children;
			var tag = vnode.tag;
			if(isDef(tag)) {
				{
					if(data && data.pre) {
						creatingElmInVPre++;
					}
					if(isUnknownElement$$1(vnode, creatingElmInVPre)) {
						warn(
							'Unknown custom element: <' + tag + '> - did you ' +
							'register the component correctly? For recursive components, ' +
							'make sure to provide the "name" option.',
							vnode.context
						);
					}
				}

				vnode.elm = vnode.ns ?
					nodeOps.createElementNS(vnode.ns, tag) :
					nodeOps.createElement(tag, vnode);
				setScope(vnode);

				/* istanbul ignore if */
				{
					createChildren(vnode, children, insertedVnodeQueue);
					if(isDef(data)) {
						invokeCreateHooks(vnode, insertedVnodeQueue);
					}
					insert(parentElm, vnode.elm, refElm);
				}

				if(data && data.pre) {
					creatingElmInVPre--;
				}
			} else if(isTrue(vnode.isComment)) {
				vnode.elm = nodeOps.createComment(vnode.text);
				insert(parentElm, vnode.elm, refElm);
			} else {
				vnode.elm = nodeOps.createTextNode(vnode.text);
				insert(parentElm, vnode.elm, refElm);
			}
		}

		function createComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
			var i = vnode.data;
			if(isDef(i)) {
				var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
				if(isDef(i = i.hook) && isDef(i = i.init)) {
					i(vnode, false /* hydrating */ );
				}
				// after calling the init hook, if the vnode is a child component
				// it should've created a child instance and mounted it. the child
				// component also has set the placeholder vnode's elm.
				// in that case we can just return the element and be done.
				if(isDef(vnode.componentInstance)) {
					initComponent(vnode, insertedVnodeQueue);
					insert(parentElm, vnode.elm, refElm);
					if(isTrue(isReactivated)) {
						reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
					}
					return true
				}
			}
		}

		function initComponent(vnode, insertedVnodeQueue) {
			if(isDef(vnode.data.pendingInsert)) {
				insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
				vnode.data.pendingInsert = null;
			}
			vnode.elm = vnode.componentInstance.$el;
			if(isPatchable(vnode)) {
				invokeCreateHooks(vnode, insertedVnodeQueue);
				setScope(vnode);
			} else {
				// empty component root.
				// skip all element-related modules except for ref (#3455)
				registerRef(vnode);
				// make sure to invoke the insert hook
				insertedVnodeQueue.push(vnode);
			}
		}

		function reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
			var i;
			// hack for #4339: a reactivated component with inner transition
			// does not trigger because the inner node's created hooks are not called
			// again. It's not ideal to involve module-specific logic in here but
			// there doesn't seem to be a better way to do it.
			var innerNode = vnode;
			while(innerNode.componentInstance) {
				innerNode = innerNode.componentInstance._vnode;
				if(isDef(i = innerNode.data) && isDef(i = i.transition)) {
					for(i = 0; i < cbs.activate.length; ++i) {
						cbs.activate[i](emptyNode, innerNode);
					}
					insertedVnodeQueue.push(innerNode);
					break
				}
			}
			// unlike a newly created component,
			// a reactivated keep-alive component doesn't insert itself
			insert(parentElm, vnode.elm, refElm);
		}

		function insert(parent, elm, ref$$1) {
			if(isDef(parent)) {
				if(isDef(ref$$1)) {
					if(nodeOps.parentNode(ref$$1) === parent) {
						nodeOps.insertBefore(parent, elm, ref$$1);
					}
				} else {
					nodeOps.appendChild(parent, elm);
				}
			}
		}

		function createChildren(vnode, children, insertedVnodeQueue) {
			if(Array.isArray(children)) {
				{
					checkDuplicateKeys(children);
				}
				for(var i = 0; i < children.length; ++i) {
					createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
				}
			} else if(isPrimitive(vnode.text)) {
				nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
			}
		}

		function isPatchable(vnode) {
			while(vnode.componentInstance) {
				vnode = vnode.componentInstance._vnode;
			}
			return isDef(vnode.tag)
		}

		function invokeCreateHooks(vnode, insertedVnodeQueue) {
			for(var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
				cbs.create[i$1](emptyNode, vnode);
			}
			i = vnode.data.hook; // Reuse variable
			if(isDef(i)) {
				if(isDef(i.create)) {
					i.create(emptyNode, vnode);
				}
				if(isDef(i.insert)) {
					insertedVnodeQueue.push(vnode);
				}
			}
		}

		// set scope id attribute for scoped CSS.
		// this is implemented as a special case to avoid the overhead
		// of going through the normal attribute patching process.
		function setScope(vnode) {
			var i;
			if(isDef(i = vnode.fnScopeId)) {
				nodeOps.setStyleScope(vnode.elm, i);
			} else {
				var ancestor = vnode;
				while(ancestor) {
					if(isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
						nodeOps.setStyleScope(vnode.elm, i);
					}
					ancestor = ancestor.parent;
				}
			}
			// for slot content they should also get the scopeId from the host instance.
			if(isDef(i = activeInstance) &&
				i !== vnode.context &&
				i !== vnode.fnContext &&
				isDef(i = i.$options._scopeId)
			) {
				nodeOps.setStyleScope(vnode.elm, i);
			}
		}

		function addVnodes(parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
			for(; startIdx <= endIdx; ++startIdx) {
				createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
			}
		}

		function invokeDestroyHook(vnode) {
			var i, j;
			var data = vnode.data;
			if(isDef(data)) {
				if(isDef(i = data.hook) && isDef(i = i.destroy)) {
					i(vnode);
				}
				for(i = 0; i < cbs.destroy.length; ++i) {
					cbs.destroy[i](vnode);
				}
			}
			if(isDef(i = vnode.children)) {
				for(j = 0; j < vnode.children.length; ++j) {
					invokeDestroyHook(vnode.children[j]);
				}
			}
		}

		function removeVnodes(vnodes, startIdx, endIdx) {
			for(; startIdx <= endIdx; ++startIdx) {
				var ch = vnodes[startIdx];
				if(isDef(ch)) {
					if(isDef(ch.tag)) {
						removeAndInvokeRemoveHook(ch);
						invokeDestroyHook(ch);
					} else { // Text node
						removeNode(ch.elm);
					}
				}
			}
		}

		function removeAndInvokeRemoveHook(vnode, rm) {
			if(isDef(rm) || isDef(vnode.data)) {
				var i;
				var listeners = cbs.remove.length + 1;
				if(isDef(rm)) {
					// we have a recursively passed down rm callback
					// increase the listeners count
					rm.listeners += listeners;
				} else {
					// directly removing
					rm = createRmCb(vnode.elm, listeners);
				}
				// recursively invoke hooks on child component root node
				if(isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
					removeAndInvokeRemoveHook(i, rm);
				}
				for(i = 0; i < cbs.remove.length; ++i) {
					cbs.remove[i](vnode, rm);
				}
				if(isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
					i(vnode, rm);
				} else {
					rm();
				}
			} else {
				removeNode(vnode.elm);
			}
		}

		function updateChildren(parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
			var oldStartIdx = 0;
			var newStartIdx = 0;
			var oldEndIdx = oldCh.length - 1;
			var oldStartVnode = oldCh[0];
			var oldEndVnode = oldCh[oldEndIdx];
			var newEndIdx = newCh.length - 1;
			var newStartVnode = newCh[0];
			var newEndVnode = newCh[newEndIdx];
			var oldKeyToIdx, idxInOld, vnodeToMove, refElm;

			// removeOnly is a special flag used only by <transition-group>
			// to ensure removed elements stay in correct relative positions
			// during leaving transitions
			var canMove = !removeOnly;

			{
				checkDuplicateKeys(newCh);
			}

			while(oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
				if(isUndef(oldStartVnode)) {
					oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
				} else if(isUndef(oldEndVnode)) {
					oldEndVnode = oldCh[--oldEndIdx];
				} else if(sameVnode(oldStartVnode, newStartVnode)) {
					patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
					oldStartVnode = oldCh[++oldStartIdx];
					newStartVnode = newCh[++newStartIdx];
				} else if(sameVnode(oldEndVnode, newEndVnode)) {
					patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
					oldEndVnode = oldCh[--oldEndIdx];
					newEndVnode = newCh[--newEndIdx];
				} else if(sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
					patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
					canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
					oldStartVnode = oldCh[++oldStartIdx];
					newEndVnode = newCh[--newEndIdx];
				} else if(sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
					patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
					canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
					oldEndVnode = oldCh[--oldEndIdx];
					newStartVnode = newCh[++newStartIdx];
				} else {
					if(isUndef(oldKeyToIdx)) {
						oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);
					}
					idxInOld = isDef(newStartVnode.key) ?
						oldKeyToIdx[newStartVnode.key] :
						findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
					if(isUndef(idxInOld)) { // New element
						createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
					} else {
						vnodeToMove = oldCh[idxInOld];
						if(sameVnode(vnodeToMove, newStartVnode)) {
							patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
							oldCh[idxInOld] = undefined;
							canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
						} else {
							// same key but different element. treat as new element
							createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
						}
					}
					newStartVnode = newCh[++newStartIdx];
				}
			}
			if(oldStartIdx > oldEndIdx) {
				refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
				addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
			} else if(newStartIdx > newEndIdx) {
				removeVnodes(oldCh, oldStartIdx, oldEndIdx);
			}
		}

		function checkDuplicateKeys(children) {
			var seenKeys = {};
			for(var i = 0; i < children.length; i++) {
				var vnode = children[i];
				var key = vnode.key;
				if(isDef(key)) {
					if(seenKeys[key]) {
						warn(
							("Duplicate keys detected: '" + key + "'. This may cause an update error."),
							vnode.context
						);
					} else {
						seenKeys[key] = true;
					}
				}
			}
		}

		function findIdxInOld(node, oldCh, start, end) {
			for(var i = start; i < end; i++) {
				var c = oldCh[i];
				if(isDef(c) && sameVnode(node, c)) {
					return i
				}
			}
		}

		function patchVnode(
			oldVnode,
			vnode,
			insertedVnodeQueue,
			ownerArray,
			index,
			removeOnly
		) {
			if(oldVnode === vnode) {
				return
			}

			if(isDef(vnode.elm) && isDef(ownerArray)) {
				// clone reused vnode
				vnode = ownerArray[index] = cloneVNode(vnode);
			}

			var elm = vnode.elm = oldVnode.elm;

			if(isTrue(oldVnode.isAsyncPlaceholder)) {
				if(isDef(vnode.asyncFactory.resolved)) {
					hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
				} else {
					vnode.isAsyncPlaceholder = true;
				}
				return
			}

			// reuse element for static trees.
			// note we only do this if the vnode is cloned -
			// if the new node is not cloned it means the render functions have been
			// reset by the hot-reload-api and we need to do a proper re-render.
			if(isTrue(vnode.isStatic) &&
				isTrue(oldVnode.isStatic) &&
				vnode.key === oldVnode.key &&
				(isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
			) {
				vnode.componentInstance = oldVnode.componentInstance;
				return
			}

			var i;
			var data = vnode.data;
			if(isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
				i(oldVnode, vnode);
			}

			var oldCh = oldVnode.children;
			var ch = vnode.children;
			if(isDef(data) && isPatchable(vnode)) {
				for(i = 0; i < cbs.update.length; ++i) {
					cbs.update[i](oldVnode, vnode);
				}
				if(isDef(i = data.hook) && isDef(i = i.update)) {
					i(oldVnode, vnode);
				}
			}
			if(isUndef(vnode.text)) {
				if(isDef(oldCh) && isDef(ch)) {
					if(oldCh !== ch) {
						updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly);
					}
				} else if(isDef(ch)) {
					{
						checkDuplicateKeys(ch);
					}
					if(isDef(oldVnode.text)) {
						nodeOps.setTextContent(elm, '');
					}
					addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
				} else if(isDef(oldCh)) {
					removeVnodes(oldCh, 0, oldCh.length - 1);
				} else if(isDef(oldVnode.text)) {
					nodeOps.setTextContent(elm, '');
				}
			} else if(oldVnode.text !== vnode.text) {
				nodeOps.setTextContent(elm, vnode.text);
			}
			if(isDef(data)) {
				if(isDef(i = data.hook) && isDef(i = i.postpatch)) {
					i(oldVnode, vnode);
				}
			}
		}

		function invokeInsertHook(vnode, queue, initial) {
			// delay insert hooks for component root nodes, invoke them after the
			// element is really inserted
			if(isTrue(initial) && isDef(vnode.parent)) {
				vnode.parent.data.pendingInsert = queue;
			} else {
				for(var i = 0; i < queue.length; ++i) {
					queue[i].data.hook.insert(queue[i]);
				}
			}
		}

		var hydrationBailed = false;
		// list of modules that can skip create hook during hydration because they
		// are already rendered on the client or has no need for initialization
		// Note: style is excluded because it relies on initial clone for future
		// deep updates (#7063).
		var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');

		// Note: this is a browser-only function so we can assume elms are DOM nodes.
		function hydrate(elm, vnode, insertedVnodeQueue, inVPre) {
			var i;
			var tag = vnode.tag;
			var data = vnode.data;
			var children = vnode.children;
			inVPre = inVPre || (data && data.pre);
			vnode.elm = elm;

			if(isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
				vnode.isAsyncPlaceholder = true;
				return true
			}
			// assert node match
			{
				if(!assertNodeMatch(elm, vnode, inVPre)) {
					return false
				}
			}
			if(isDef(data)) {
				if(isDef(i = data.hook) && isDef(i = i.init)) {
					i(vnode, true /* hydrating */ );
				}
				if(isDef(i = vnode.componentInstance)) {
					// child component. it should have hydrated its own tree.
					initComponent(vnode, insertedVnodeQueue);
					return true
				}
			}
			if(isDef(tag)) {
				if(isDef(children)) {
					// empty element, allow client to pick up and populate children
					if(!elm.hasChildNodes()) {
						createChildren(vnode, children, insertedVnodeQueue);
					} else {
						// v-html and domProps: innerHTML
						if(isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
							if(i !== elm.innerHTML) {
								/* istanbul ignore if */
								if(typeof console !== 'undefined' &&
									!hydrationBailed
								) {
									hydrationBailed = true;
									console.warn('Parent: ', elm);
									console.warn('server innerHTML: ', i);
									console.warn('client innerHTML: ', elm.innerHTML);
								}
								return false
							}
						} else {
							// iterate and compare children lists
							var childrenMatch = true;
							var childNode = elm.firstChild;
							for(var i$1 = 0; i$1 < children.length; i$1++) {
								if(!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
									childrenMatch = false;
									break
								}
								childNode = childNode.nextSibling;
							}
							// if childNode is not null, it means the actual childNodes list is
							// longer than the virtual children list.
							if(!childrenMatch || childNode) {
								/* istanbul ignore if */
								if(typeof console !== 'undefined' &&
									!hydrationBailed
								) {
									hydrationBailed = true;
									console.warn('Parent: ', elm);
									console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
								}
								return false
							}
						}
					}
				}
				if(isDef(data)) {
					var fullInvoke = false;
					for(var key in data) {
						if(!isRenderedModule(key)) {
							fullInvoke = true;
							invokeCreateHooks(vnode, insertedVnodeQueue);
							break
						}
					}
					if(!fullInvoke && data['class']) {
						// ensure collecting deps for deep class bindings for future updates
						traverse(data['class']);
					}
				}
			} else if(elm.data !== vnode.text) {
				elm.data = vnode.text;
			}
			return true
		}

		function assertNodeMatch(node, vnode, inVPre) {
			if(isDef(vnode.tag)) {
				return vnode.tag.indexOf('vue-component') === 0 || (!isUnknownElement$$1(vnode, inVPre) &&
					vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
				)
			} else {
				return node.nodeType === (vnode.isComment ? 8 : 3)
			}
		}

		return function patch(oldVnode, vnode, hydrating, removeOnly) {
			if(isUndef(vnode)) {
				if(isDef(oldVnode)) {
					invokeDestroyHook(oldVnode);
				}
				return
			}

			var isInitialPatch = false;
			var insertedVnodeQueue = [];

			if(isUndef(oldVnode)) {
				// empty mount (likely as component), create new root element
				isInitialPatch = true;
				createElm(vnode, insertedVnodeQueue);
			} else {
				var isRealElement = isDef(oldVnode.nodeType);
				if(!isRealElement && sameVnode(oldVnode, vnode)) {
					// patch existing root node
					patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
				} else {
					if(isRealElement) {
						// mounting to a real element
						// check if this is server-rendered content and if we can perform
						// a successful hydration.
						if(oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
							oldVnode.removeAttribute(SSR_ATTR);
							hydrating = true;
						}
						if(isTrue(hydrating)) {
							if(hydrate(oldVnode, vnode, insertedVnodeQueue)) {
								invokeInsertHook(vnode, insertedVnodeQueue, true);
								return oldVnode
							} else {
								warn(
									'The client-side rendered virtual DOM tree is not matching ' +
									'server-rendered content. This is likely caused by incorrect ' +
									'HTML markup, for example nesting block-level elements inside ' +
									'<p>, or missing <tbody>. Bailing hydration and performing ' +
									'full client-side render.'
								);
							}
						}
						// either not server-rendered, or hydration failed.
						// create an empty node and replace it
						oldVnode = emptyNodeAt(oldVnode);
					}

					// replacing existing element
					var oldElm = oldVnode.elm;
					var parentElm = nodeOps.parentNode(oldElm);

					// create new node
					createElm(
						vnode,
						insertedVnodeQueue,
						// extremely rare edge case: do not insert if old element is in a
						// leaving transition. Only happens when combining transition +
						// keep-alive + HOCs. (#4590)
						oldElm._leaveCb ? null : parentElm,
						nodeOps.nextSibling(oldElm)
					);

					// update parent placeholder node element, recursively
					if(isDef(vnode.parent)) {
						var ancestor = vnode.parent;
						var patchable = isPatchable(vnode);
						while(ancestor) {
							for(var i = 0; i < cbs.destroy.length; ++i) {
								cbs.destroy[i](ancestor);
							}
							ancestor.elm = vnode.elm;
							if(patchable) {
								for(var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
									cbs.create[i$1](emptyNode, ancestor);
								}
								// #6513
								// invoke insert hooks that may have been merged by create hooks.
								// e.g. for directives that uses the "inserted" hook.
								var insert = ancestor.data.hook.insert;
								if(insert.merged) {
									// start at index 1 to avoid re-invoking component mounted hook
									for(var i$2 = 1; i$2 < insert.fns.length; i$2++) {
										insert.fns[i$2]();
									}
								}
							} else {
								registerRef(ancestor);
							}
							ancestor = ancestor.parent;
						}
					}

					// destroy old node
					if(isDef(parentElm)) {
						removeVnodes([oldVnode], 0, 0);
					} else if(isDef(oldVnode.tag)) {
						invokeDestroyHook(oldVnode);
					}
				}
			}

			invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
			return vnode.elm
		}
	}

	/*  */

	var directives = {
		create: updateDirectives,
		update: updateDirectives,
		destroy: function unbindDirectives(vnode) {
			updateDirectives(vnode, emptyNode);
		}
	};

	function updateDirectives(oldVnode, vnode) {
		if(oldVnode.data.directives || vnode.data.directives) {
			_update(oldVnode, vnode);
		}
	}

	function _update(oldVnode, vnode) {
		var isCreate = oldVnode === emptyNode;
		var isDestroy = vnode === emptyNode;
		var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
		var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);

		var dirsWithInsert = [];
		var dirsWithPostpatch = [];

		var key, oldDir, dir;
		for(key in newDirs) {
			oldDir = oldDirs[key];
			dir = newDirs[key];
			if(!oldDir) {
				// new directive, bind
				callHook$1(dir, 'bind', vnode, oldVnode);
				if(dir.def && dir.def.inserted) {
					dirsWithInsert.push(dir);
				}
			} else {
				// existing directive, update
				dir.oldValue = oldDir.value;
				dir.oldArg = oldDir.arg;
				callHook$1(dir, 'update', vnode, oldVnode);
				if(dir.def && dir.def.componentUpdated) {
					dirsWithPostpatch.push(dir);
				}
			}
		}

		if(dirsWithInsert.length) {
			var callInsert = function() {
				for(var i = 0; i < dirsWithInsert.length; i++) {
					callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
				}
			};
			if(isCreate) {
				mergeVNodeHook(vnode, 'insert', callInsert);
			} else {
				callInsert();
			}
		}

		if(dirsWithPostpatch.length) {
			mergeVNodeHook(vnode, 'postpatch', function() {
				for(var i = 0; i < dirsWithPostpatch.length; i++) {
					callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
				}
			});
		}

		if(!isCreate) {
			for(key in oldDirs) {
				if(!newDirs[key]) {
					// no longer present, unbind
					callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
				}
			}
		}
	}

	var emptyModifiers = Object.create(null);

	function normalizeDirectives$1(
		dirs,
		vm
	) {
		var res = Object.create(null);
		if(!dirs) {
			// $flow-disable-line
			return res
		}
		var i, dir;
		for(i = 0; i < dirs.length; i++) {
			dir = dirs[i];
			if(!dir.modifiers) {
				// $flow-disable-line
				dir.modifiers = emptyModifiers;
			}
			res[getRawDirName(dir)] = dir;
			dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
		}
		// $flow-disable-line
		return res
	}

	function getRawDirName(dir) {
		return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
	}

	function callHook$1(dir, hook, vnode, oldVnode, isDestroy) {
		var fn = dir.def && dir.def[hook];
		if(fn) {
			try {
				fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
			} catch(e) {
				handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
			}
		}
	}

	var baseModules = [
		ref,
		directives
	];

	/*  */

	function updateAttrs(oldVnode, vnode) {
		var opts = vnode.componentOptions;
		if(isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
			return
		}
		if(isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
			return
		}
		var key, cur, old;
		var elm = vnode.elm;
		var oldAttrs = oldVnode.data.attrs || {};
		var attrs = vnode.data.attrs || {};
		// clone observed objects, as the user probably wants to mutate it
		if(isDef(attrs.__ob__)) {
			attrs = vnode.data.attrs = extend({}, attrs);
		}

		for(key in attrs) {
			cur = attrs[key];
			old = oldAttrs[key];
			if(old !== cur) {
				setAttr(elm, key, cur);
			}
		}
		// #4391: in IE9, setting type can reset value for input[type=radio]
		// #6666: IE/Edge forces progress value down to 1 before setting a max
		/* istanbul ignore if */
		if((isIE || isEdge) && attrs.value !== oldAttrs.value) {
			setAttr(elm, 'value', attrs.value);
		}
		for(key in oldAttrs) {
			if(isUndef(attrs[key])) {
				if(isXlink(key)) {
					elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
				} else if(!isEnumeratedAttr(key)) {
					elm.removeAttribute(key);
				}
			}
		}
	}

	function setAttr(el, key, value) {
		if(el.tagName.indexOf('-') > -1) {
			baseSetAttr(el, key, value);
		} else if(isBooleanAttr(key)) {
			// set attribute for blank value
			// e.g. <option disabled>Select one</option>
			if(isFalsyAttrValue(value)) {
				el.removeAttribute(key);
			} else {
				// technically allowfullscreen is a boolean attribute for <iframe>,
				// but Flash expects a value of "true" when used on <embed> tag
				value = key === 'allowfullscreen' && el.tagName === 'EMBED' ?
					'true' :
					key;
				el.setAttribute(key, value);
			}
		} else if(isEnumeratedAttr(key)) {
			el.setAttribute(key, convertEnumeratedValue(key, value));
		} else if(isXlink(key)) {
			if(isFalsyAttrValue(value)) {
				el.removeAttributeNS(xlinkNS, getXlinkProp(key));
			} else {
				el.setAttributeNS(xlinkNS, key, value);
			}
		} else {
			baseSetAttr(el, key, value);
		}
	}

	function baseSetAttr(el, key, value) {
		if(isFalsyAttrValue(value)) {
			el.removeAttribute(key);
		} else {
			// #7138: IE10 & 11 fires input event when setting placeholder on
			// <textarea>... block the first input event and remove the blocker
			// immediately.
			/* istanbul ignore if */
			if(
				isIE && !isIE9 &&
				el.tagName === 'TEXTAREA' &&
				key === 'placeholder' && value !== '' && !el.__ieph
			) {
				var blocker = function(e) {
					e.stopImmediatePropagation();
					el.removeEventListener('input', blocker);
				};
				el.addEventListener('input', blocker);
				// $flow-disable-line
				el.__ieph = true; /* IE placeholder patched */
			}
			el.setAttribute(key, value);
		}
	}

	var attrs = {
		create: updateAttrs,
		update: updateAttrs
	};

	/*  */

	function updateClass(oldVnode, vnode) {
		var el = vnode.elm;
		var data = vnode.data;
		var oldData = oldVnode.data;
		if(
			isUndef(data.staticClass) &&
			isUndef(data.class) && (
				isUndef(oldData) || (
					isUndef(oldData.staticClass) &&
					isUndef(oldData.class)
				)
			)
		) {
			return
		}

		var cls = genClassForVnode(vnode);

		// handle transition classes
		var transitionClass = el._transitionClasses;
		if(isDef(transitionClass)) {
			cls = concat(cls, stringifyClass(transitionClass));
		}

		// set the class
		if(cls !== el._prevClass) {
			el.setAttribute('class', cls);
			el._prevClass = cls;
		}
	}

	var klass = {
		create: updateClass,
		update: updateClass
	};

	/*  */

	var validDivisionCharRE = /[\w).+\-_$\]]/;

	function parseFilters(exp) {
		var inSingle = false;
		var inDouble = false;
		var inTemplateString = false;
		var inRegex = false;
		var curly = 0;
		var square = 0;
		var paren = 0;
		var lastFilterIndex = 0;
		var c, prev, i, expression, filters;

		for(i = 0; i < exp.length; i++) {
			prev = c;
			c = exp.charCodeAt(i);
			if(inSingle) {
				if(c === 0x27 && prev !== 0x5C) {
					inSingle = false;
				}
			} else if(inDouble) {
				if(c === 0x22 && prev !== 0x5C) {
					inDouble = false;
				}
			} else if(inTemplateString) {
				if(c === 0x60 && prev !== 0x5C) {
					inTemplateString = false;
				}
			} else if(inRegex) {
				if(c === 0x2f && prev !== 0x5C) {
					inRegex = false;
				}
			} else if(
				c === 0x7C && // pipe
				exp.charCodeAt(i + 1) !== 0x7C &&
				exp.charCodeAt(i - 1) !== 0x7C &&
				!curly && !square && !paren
			) {
				if(expression === undefined) {
					// first filter, end of expression
					lastFilterIndex = i + 1;
					expression = exp.slice(0, i).trim();
				} else {
					pushFilter();
				}
			} else {
				switch(c) {
					case 0x22:
						inDouble = true;
						break // "
					case 0x27:
						inSingle = true;
						break // '
					case 0x60:
						inTemplateString = true;
						break // `
					case 0x28:
						paren++;
						break // (
					case 0x29:
						paren--;
						break // )
					case 0x5B:
						square++;
						break // [
					case 0x5D:
						square--;
						break // ]
					case 0x7B:
						curly++;
						break // {
					case 0x7D:
						curly--;
						break // }
				}
				if(c === 0x2f) { // /
					var j = i - 1;
					var p = (void 0);
					// find first non-whitespace prev char
					for(; j >= 0; j--) {
						p = exp.charAt(j);
						if(p !== ' ') {
							break
						}
					}
					if(!p || !validDivisionCharRE.test(p)) {
						inRegex = true;
					}
				}
			}
		}

		if(expression === undefined) {
			expression = exp.slice(0, i).trim();
		} else if(lastFilterIndex !== 0) {
			pushFilter();
		}

		function pushFilter() {
			(filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
			lastFilterIndex = i + 1;
		}

		if(filters) {
			for(i = 0; i < filters.length; i++) {
				expression = wrapFilter(expression, filters[i]);
			}
		}

		return expression
	}

	function wrapFilter(exp, filter) {
		var i = filter.indexOf('(');
		if(i < 0) {
			// _f: resolveFilter
			return("_f(\"" + filter + "\")(" + exp + ")")
		} else {
			var name = filter.slice(0, i);
			var args = filter.slice(i + 1);
			return("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
		}
	}

	/*  */

	/* eslint-disable no-unused-vars */
	function baseWarn(msg, range) {
		console.error(("[Vue compiler]: " + msg));
	}
	/* eslint-enable no-unused-vars */

	function pluckModuleFunction(
		modules,
		key
	) {
		return modules ?
			modules.map(function(m) {
				return m[key];
			}).filter(function(_) {
				return _;
			}) :
			[]
	}

	function addProp(el, name, value, range, dynamic) {
		(el.props || (el.props = [])).push(rangeSetItem({
			name: name,
			value: value,
			dynamic: dynamic
		}, range));
		el.plain = false;
	}

	function addAttr(el, name, value, range, dynamic) {
		var attrs = dynamic ?
			(el.dynamicAttrs || (el.dynamicAttrs = [])) :
			(el.attrs || (el.attrs = []));
		attrs.push(rangeSetItem({
			name: name,
			value: value,
			dynamic: dynamic
		}, range));
		el.plain = false;
	}

	// add a raw attr (use this in preTransforms)
	function addRawAttr(el, name, value, range) {
		el.attrsMap[name] = value;
		el.attrsList.push(rangeSetItem({
			name: name,
			value: value
		}, range));
	}

	function addDirective(
		el,
		name,
		rawName,
		value,
		arg,
		isDynamicArg,
		modifiers,
		range
	) {
		(el.directives || (el.directives = [])).push(rangeSetItem({
			name: name,
			rawName: rawName,
			value: value,
			arg: arg,
			isDynamicArg: isDynamicArg,
			modifiers: modifiers
		}, range));
		el.plain = false;
	}

	function prependModifierMarker(symbol, name, dynamic) {
		return dynamic ?
			("_p(" + name + ",\"" + symbol + "\")") :
			symbol + name // mark the event as captured
	}

	function addHandler(
		el,
		name,
		value,
		modifiers,
		important,
		warn,
		range,
		dynamic
	) {
		modifiers = modifiers || emptyObject;
		// warn prevent and passive modifier
		/* istanbul ignore if */
		if(
			warn &&
			modifiers.prevent && modifiers.passive
		) {
			warn(
				'passive and prevent can\'t be used together. ' +
				'Passive handler can\'t prevent default event.',
				range
			);
		}

		// normalize click.right and click.middle since they don't actually fire
		// this is technically browser-specific, but at least for now browsers are
		// the only target envs that have right/middle clicks.
		if(modifiers.right) {
			if(dynamic) {
				name = "(" + name + ")==='click'?'contextmenu':(" + name + ")";
			} else if(name === 'click') {
				name = 'contextmenu';
				delete modifiers.right;
			}
		} else if(modifiers.middle) {
			if(dynamic) {
				name = "(" + name + ")==='click'?'mouseup':(" + name + ")";
			} else if(name === 'click') {
				name = 'mouseup';
			}
		}

		// check capture modifier
		if(modifiers.capture) {
			delete modifiers.capture;
			name = prependModifierMarker('!', name, dynamic);
		}
		if(modifiers.once) {
			delete modifiers.once;
			name = prependModifierMarker('~', name, dynamic);
		}
		/* istanbul ignore if */
		if(modifiers.passive) {
			delete modifiers.passive;
			name = prependModifierMarker('&', name, dynamic);
		}

		var events;
		if(modifiers.native) {
			delete modifiers.native;
			events = el.nativeEvents || (el.nativeEvents = {});
		} else {
			events = el.events || (el.events = {});
		}

		var newHandler = rangeSetItem({
			value: value.trim(),
			dynamic: dynamic
		}, range);
		if(modifiers !== emptyObject) {
			newHandler.modifiers = modifiers;
		}

		var handlers = events[name];
		/* istanbul ignore if */
		if(Array.isArray(handlers)) {
			important ? handlers.unshift(newHandler) : handlers.push(newHandler);
		} else if(handlers) {
			events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
		} else {
			events[name] = newHandler;
		}

		el.plain = false;
	}

	function getRawBindingAttr(
		el,
		name
	) {
		return el.rawAttrsMap[':' + name] ||
			el.rawAttrsMap['v-bind:' + name] ||
			el.rawAttrsMap[name]
	}

	function getBindingAttr(
		el,
		name,
		getStatic
	) {
		var dynamicValue =
			getAndRemoveAttr(el, ':' + name) ||
			getAndRemoveAttr(el, 'v-bind:' + name);
		if(dynamicValue != null) {
			return parseFilters(dynamicValue)
		} else if(getStatic !== false) {
			var staticValue = getAndRemoveAttr(el, name);
			if(staticValue != null) {
				return JSON.stringify(staticValue)
			}
		}
	}

	// note: this only removes the attr from the Array (attrsList) so that it
	// doesn't get processed by processAttrs.
	// By default it does NOT remove it from the map (attrsMap) because the map is
	// needed during codegen.
	function getAndRemoveAttr(
		el,
		name,
		removeFromMap
	) {
		var val;
		if((val = el.attrsMap[name]) != null) {
			var list = el.attrsList;
			for(var i = 0, l = list.length; i < l; i++) {
				if(list[i].name === name) {
					list.splice(i, 1);
					break
				}
			}
		}
		if(removeFromMap) {
			delete el.attrsMap[name];
		}
		return val
	}

	function getAndRemoveAttrByRegex(
		el,
		name
	) {
		var list = el.attrsList;
		for(var i = 0, l = list.length; i < l; i++) {
			var attr = list[i];
			if(name.test(attr.name)) {
				list.splice(i, 1);
				return attr
			}
		}
	}

	function rangeSetItem(
		item,
		range
	) {
		if(range) {
			if(range.start != null) {
				item.start = range.start;
			}
			if(range.end != null) {
				item.end = range.end;
			}
		}
		return item
	}

	/*  */

	/**
	 * Cross-platform code generation for component v-model
	 */
	function genComponentModel(
		el,
		value,
		modifiers
	) {
		var ref = modifiers || {};
		var number = ref.number;
		var trim = ref.trim;

		var baseValueExpression = '$$v';
		var valueExpression = baseValueExpression;
		if(trim) {
			valueExpression =
				"(typeof " + baseValueExpression + " === 'string'" +
				"? " + baseValueExpression + ".trim()" +
				": " + baseValueExpression + ")";
		}
		if(number) {
			valueExpression = "_n(" + valueExpression + ")";
		}
		var assignment = genAssignmentCode(value, valueExpression);

		el.model = {
			value: ("(" + value + ")"),
			expression: JSON.stringify(value),
			callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
		};
	}

	/**
	 * Cross-platform codegen helper for generating v-model value assignment code.
	 */
	function genAssignmentCode(
		value,
		assignment
	) {
		var res = parseModel(value);
		if(res.key === null) {
			return(value + "=" + assignment)
		} else {
			return("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
		}
	}

	/**
	 * Parse a v-model expression into a base path and a final key segment.
	 * Handles both dot-path and possible square brackets.
	 *
	 * Possible cases:
	 *
	 * - test
	 * - test[key]
	 * - test[test1[key]]
	 * - test["a"][key]
	 * - xxx.test[a[a].test1[key]]
	 * - test.xxx.a["asa"][test1[key]]
	 *
	 */

	var len, str, chr, index$1, expressionPos, expressionEndPos;

	function parseModel(val) {
		// Fix https://github.com/vuejs/vue/pull/7730
		// allow v-model="obj.val " (trailing whitespace)
		val = val.trim();
		len = val.length;

		if(val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
			index$1 = val.lastIndexOf('.');
			if(index$1 > -1) {
				return {
					exp: val.slice(0, index$1),
					key: '"' + val.slice(index$1 + 1) + '"'
				}
			} else {
				return {
					exp: val,
					key: null
				}
			}
		}

		str = val;
		index$1 = expressionPos = expressionEndPos = 0;

		while(!eof()) {
			chr = next();
			/* istanbul ignore if */
			if(isStringStart(chr)) {
				parseString(chr);
			} else if(chr === 0x5B) {
				parseBracket(chr);
			}
		}

		return {
			exp: val.slice(0, expressionPos),
			key: val.slice(expressionPos + 1, expressionEndPos)
		}
	}

	function next() {
		return str.charCodeAt(++index$1)
	}

	function eof() {
		return index$1 >= len
	}

	function isStringStart(chr) {
		return chr === 0x22 || chr === 0x27
	}

	function parseBracket(chr) {
		var inBracket = 1;
		expressionPos = index$1;
		while(!eof()) {
			chr = next();
			if(isStringStart(chr)) {
				parseString(chr);
				continue
			}
			if(chr === 0x5B) {
				inBracket++;
			}
			if(chr === 0x5D) {
				inBracket--;
			}
			if(inBracket === 0) {
				expressionEndPos = index$1;
				break
			}
		}
	}

	function parseString(chr) {
		var stringQuote = chr;
		while(!eof()) {
			chr = next();
			if(chr === stringQuote) {
				break
			}
		}
	}

	/*  */

	var warn$1;

	// in some cases, the event used has to be determined at runtime
	// so we used some reserved tokens during compile.
	var RANGE_TOKEN = '__r';
	var CHECKBOX_RADIO_TOKEN = '__c';

	function model(
		el,
		dir,
		_warn
	) {
		warn$1 = _warn;
		var value = dir.value;
		var modifiers = dir.modifiers;
		var tag = el.tag;
		var type = el.attrsMap.type;

		{
			// inputs with type="file" are read only and setting the input's
			// value will throw an error.
			if(tag === 'input' && type === 'file') {
				warn$1(
					"<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
					"File inputs are read only. Use a v-on:change listener instead.",
					el.rawAttrsMap['v-model']
				);
			}
		}

		if(el.component) {
			genComponentModel(el, value, modifiers);
			// component v-model doesn't need extra runtime
			return false
		} else if(tag === 'select') {
			genSelect(el, value, modifiers);
		} else if(tag === 'input' && type === 'checkbox') {
			genCheckboxModel(el, value, modifiers);
		} else if(tag === 'input' && type === 'radio') {
			genRadioModel(el, value, modifiers);
		} else if(tag === 'input' || tag === 'textarea') {
			genDefaultModel(el, value, modifiers);
		} else if(!config.isReservedTag(tag)) {
			genComponentModel(el, value, modifiers);
			// component v-model doesn't need extra runtime
			return false
		} else {
			warn$1(
				"<" + (el.tag) + " v-model=\"" + value + "\">: " +
				"v-model is not supported on this element type. " +
				'If you are working with contenteditable, it\'s recommended to ' +
				'wrap a library dedicated for that purpose inside a custom component.',
				el.rawAttrsMap['v-model']
			);
		}

		// ensure runtime directive metadata
		return true
	}

	function genCheckboxModel(
		el,
		value,
		modifiers
	) {
		var number = modifiers && modifiers.number;
		var valueBinding = getBindingAttr(el, 'value') || 'null';
		var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
		var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
		addProp(el, 'checked',
			"Array.isArray(" + value + ")" +
			"?_i(" + value + "," + valueBinding + ")>-1" + (
				trueValueBinding === 'true' ?
				(":(" + value + ")") :
				(":_q(" + value + "," + trueValueBinding + ")")
			)
		);
		addHandler(el, 'change',
			"var $$a=" + value + "," +
			'$$el=$event.target,' +
			"$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
			'if(Array.isArray($$a)){' +
			"var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
			'$$i=_i($$a,$$v);' +
			"if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
			"else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
			"}else{" + (genAssignmentCode(value, '$$c')) + "}",
			null, true
		);
	}

	function genRadioModel(
		el,
		value,
		modifiers
	) {
		var number = modifiers && modifiers.number;
		var valueBinding = getBindingAttr(el, 'value') || 'null';
		valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
		addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
		addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
	}

	function genSelect(
		el,
		value,
		modifiers
	) {
		var number = modifiers && modifiers.number;
		var selectedVal = "Array.prototype.filter" +
			".call($event.target.options,function(o){return o.selected})" +
			".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
			"return " + (number ? '_n(val)' : 'val') + "})";

		var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
		var code = "var $$selectedVal = " + selectedVal + ";";
		code = code + " " + (genAssignmentCode(value, assignment));
		addHandler(el, 'change', code, null, true);
	}

	function genDefaultModel(
		el,
		value,
		modifiers
	) {
		var type = el.attrsMap.type;

		// warn if v-bind:value conflicts with v-model
		// except for inputs with v-bind:type
		{
			var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
			var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
			if(value$1 && !typeBinding) {
				var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
				warn$1(
					binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
					'because the latter already expands to a value binding internally',
					el.rawAttrsMap[binding]
				);
			}
		}

		var ref = modifiers || {};
		var lazy = ref.lazy;
		var number = ref.number;
		var trim = ref.trim;
		var needCompositionGuard = !lazy && type !== 'range';
		var event = lazy ?
			'change' :
			type === 'range' ?
			RANGE_TOKEN :
			'input';

		var valueExpression = '$event.target.value';
		if(trim) {
			valueExpression = "$event.target.value.trim()";
		}
		if(number) {
			valueExpression = "_n(" + valueExpression + ")";
		}

		var code = genAssignmentCode(value, valueExpression);
		if(needCompositionGuard) {
			code = "if($event.target.composing)return;" + code;
		}

		addProp(el, 'value', ("(" + value + ")"));
		addHandler(el, event, code, null, true);
		if(trim || number) {
			addHandler(el, 'blur', '$forceUpdate()');
		}
	}

	/*  */

	// normalize v-model event tokens that can only be determined at runtime.
	// it's important to place the event as the first in the array because
	// the whole point is ensuring the v-model callback gets called before
	// user-attached handlers.
	function normalizeEvents(on) {
		/* istanbul ignore if */
		if(isDef(on[RANGE_TOKEN])) {
			// IE input[type=range] only supports `change` event
			var event = isIE ? 'change' : 'input';
			on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
			delete on[RANGE_TOKEN];
		}
		// This was originally intended to fix #4521 but no longer necessary
		// after 2.5. Keeping it for backwards compat with generated code from < 2.4
		/* istanbul ignore if */
		if(isDef(on[CHECKBOX_RADIO_TOKEN])) {
			on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
			delete on[CHECKBOX_RADIO_TOKEN];
		}
	}

	var target$1;

	function createOnceHandler$1(event, handler, capture) {
		var _target = target$1; // save current target element in closure
		return function onceHandler() {
			var res = handler.apply(null, arguments);
			if(res !== null) {
				remove$2(event, onceHandler, capture, _target);
			}
		}
	}

	// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
	// implementation and does not fire microtasks in between event propagation, so
	// safe to exclude.
	var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);

	function add$1(
		name,
		handler,
		capture,
		passive
	) {
		// async edge case #6566: inner click event triggers patch, event handler
		// attached to outer element during patch, and triggered again. This
		// happens because browsers fire microtask ticks between event propagation.
		// the solution is simple: we save the timestamp when a handler is attached,
		// and the handler would only fire if the event passed to it was fired
		// AFTER it was attached.
		if(useMicrotaskFix) {
			var attachedTimestamp = currentFlushTimestamp;
			var original = handler;
			handler = original._wrapper = function(e) {
				if(
					// no bubbling, should always fire.
					// this is just a safety net in case event.timeStamp is unreliable in
					// certain weird environments...
					e.target === e.currentTarget ||
					// event is fired after handler attachment
					e.timeStamp >= attachedTimestamp ||
					// bail for environments that have buggy event.timeStamp implementations
					// #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
					// #9681 QtWebEngine event.timeStamp is negative value
					e.timeStamp <= 0 ||
					// #9448 bail if event is fired in another document in a multi-page
					// electron/nw.js app, since event.timeStamp will be using a different
					// starting reference
					e.target.ownerDocument !== document
				) {
					return original.apply(this, arguments)
				}
			};
		}
		target$1.addEventListener(
			name,
			handler,
			supportsPassive ?
			{
				capture: capture,
				passive: passive
			} :
			capture
		);
	}

	function remove$2(
		name,
		handler,
		capture,
		_target
	) {
		(_target || target$1).removeEventListener(
			name,
			handler._wrapper || handler,
			capture
		);
	}

	function updateDOMListeners(oldVnode, vnode) {
		if(isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
			return
		}
		var on = vnode.data.on || {};
		var oldOn = oldVnode.data.on || {};
		target$1 = vnode.elm;
		normalizeEvents(on);
		updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
		target$1 = undefined;
	}

	var events = {
		create: updateDOMListeners,
		update: updateDOMListeners
	};

	/*  */

	var svgContainer;

	function updateDOMProps(oldVnode, vnode) {
		if(isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
			return
		}
		var key, cur;
		var elm = vnode.elm;
		var oldProps = oldVnode.data.domProps || {};
		var props = vnode.data.domProps || {};
		// clone observed objects, as the user probably wants to mutate it
		if(isDef(props.__ob__)) {
			props = vnode.data.domProps = extend({}, props);
		}

		for(key in oldProps) {
			if(!(key in props)) {
				elm[key] = '';
			}
		}

		for(key in props) {
			cur = props[key];
			// ignore children if the node has textContent or innerHTML,
			// as these will throw away existing DOM nodes and cause removal errors
			// on subsequent patches (#3360)
			if(key === 'textContent' || key === 'innerHTML') {
				if(vnode.children) {
					vnode.children.length = 0;
				}
				if(cur === oldProps[key]) {
					continue
				}
				// #6601 work around Chrome version <= 55 bug where single textNode
				// replaced by innerHTML/textContent retains its parentNode property
				if(elm.childNodes.length === 1) {
					elm.removeChild(elm.childNodes[0]);
				}
			}

			if(key === 'value' && elm.tagName !== 'PROGRESS') {
				// store value as _value as well since
				// non-string values will be stringified
				elm._value = cur;
				// avoid resetting cursor position when value is the same
				var strCur = isUndef(cur) ? '' : String(cur);
				if(shouldUpdateValue(elm, strCur)) {
					elm.value = strCur;
				}
			} else if(key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
				// IE doesn't support innerHTML for SVG elements
				svgContainer = svgContainer || document.createElement('div');
				svgContainer.innerHTML = "<svg>" + cur + "</svg>";
				var svg = svgContainer.firstChild;
				while(elm.firstChild) {
					elm.removeChild(elm.firstChild);
				}
				while(svg.firstChild) {
					elm.appendChild(svg.firstChild);
				}
			} else if(
				// skip the update if old and new VDOM state is the same.
				// `value` is handled separately because the DOM value may be temporarily
				// out of sync with VDOM state due to focus, composition and modifiers.
				// This  #4521 by skipping the unnecessary `checked` update.
				cur !== oldProps[key]
			) {
				// some property updates can throw
				// e.g. `value` on <progress> w/ non-finite value
				try {
					elm[key] = cur;
				} catch(e) {}
			}
		}
	}

	// check platforms/web/util/attrs.js acceptValue

	function shouldUpdateValue(elm, checkVal) {
		return(!elm.composing && (
			elm.tagName === 'OPTION' ||
			isNotInFocusAndDirty(elm, checkVal) ||
			isDirtyWithModifiers(elm, checkVal)
		))
	}

	function isNotInFocusAndDirty(elm, checkVal) {
		// return true when textbox (.number and .trim) loses focus and its value is
		// not equal to the updated value
		var notInFocus = true;
		// #6157
		// work around IE bug when accessing document.activeElement in an iframe
		try {
			notInFocus = document.activeElement !== elm;
		} catch(e) {}
		return notInFocus && elm.value !== checkVal
	}

	function isDirtyWithModifiers(elm, newVal) {
		var value = elm.value;
		var modifiers = elm._vModifiers; // injected by v-model runtime
		if(isDef(modifiers)) {
			if(modifiers.number) {
				return toNumber(value) !== toNumber(newVal)
			}
			if(modifiers.trim) {
				return value.trim() !== newVal.trim()
			}
		}
		return value !== newVal
	}

	var domProps = {
		create: updateDOMProps,
		update: updateDOMProps
	};

	/*  */

	var parseStyleText = cached(function(cssText) {
		var res = {};
		var listDelimiter = /;(?![^(]*\))/g;
		var propertyDelimiter = /:(.+)/;
		cssText.split(listDelimiter).forEach(function(item) {
			if(item) {
				var tmp = item.split(propertyDelimiter);
				tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
			}
		});
		return res
	});

	// merge static and dynamic style data on the same vnode
	function normalizeStyleData(data) {
		var style = normalizeStyleBinding(data.style);
		// static style is pre-processed into an object during compilation
		// and is always a fresh object, so it's safe to merge into it
		return data.staticStyle ?
			extend(data.staticStyle, style) :
			style
	}

	// normalize possible array / string values into Object
	function normalizeStyleBinding(bindingStyle) {
		if(Array.isArray(bindingStyle)) {
			return toObject(bindingStyle)
		}
		if(typeof bindingStyle === 'string') {
			return parseStyleText(bindingStyle)
		}
		return bindingStyle
	}

	/**
	 * parent component style should be after child's
	 * so that parent component's style could override it
	 */
	function getStyle(vnode, checkChild) {
		var res = {};
		var styleData;

		if(checkChild) {
			var childNode = vnode;
			while(childNode.componentInstance) {
				childNode = childNode.componentInstance._vnode;
				if(
					childNode && childNode.data &&
					(styleData = normalizeStyleData(childNode.data))
				) {
					extend(res, styleData);
				}
			}
		}

		if((styleData = normalizeStyleData(vnode.data))) {
			extend(res, styleData);
		}

		var parentNode = vnode;
		while((parentNode = parentNode.parent)) {
			if(parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
				extend(res, styleData);
			}
		}
		return res
	}

	/*  */

	var cssVarRE = /^--/;
	var importantRE = /\s*!important$/;
	var setProp = function(el, name, val) {
		/* istanbul ignore if */
		if(cssVarRE.test(name)) {
			el.style.setProperty(name, val);
		} else if(importantRE.test(val)) {
			el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
		} else {
			var normalizedName = normalize(name);
			if(Array.isArray(val)) {
				// Support values array created by autoprefixer, e.g.
				// {display: ["-webkit-box", "-ms-flexbox", "flex"]}
				// Set them one by one, and the browser will only set those it can recognize
				for(var i = 0, len = val.length; i < len; i++) {
					el.style[normalizedName] = val[i];
				}
			} else {
				el.style[normalizedName] = val;
			}
		}
	};

	var vendorNames = ['Webkit', 'Moz', 'ms'];

	var emptyStyle;
	var normalize = cached(function(prop) {
		emptyStyle = emptyStyle || document.createElement('div').style;
		prop = camelize(prop);
		if(prop !== 'filter' && (prop in emptyStyle)) {
			return prop
		}
		var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
		for(var i = 0; i < vendorNames.length; i++) {
			var name = vendorNames[i] + capName;
			if(name in emptyStyle) {
				return name
			}
		}
	});

	function updateStyle(oldVnode, vnode) {
		var data = vnode.data;
		var oldData = oldVnode.data;

		if(isUndef(data.staticStyle) && isUndef(data.style) &&
			isUndef(oldData.staticStyle) && isUndef(oldData.style)
		) {
			return
		}

		var cur, name;
		var el = vnode.elm;
		var oldStaticStyle = oldData.staticStyle;
		var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};

		// if static style exists, stylebinding already merged into it when doing normalizeStyleData
		var oldStyle = oldStaticStyle || oldStyleBinding;

		var style = normalizeStyleBinding(vnode.data.style) || {};

		// store normalized style under a different key for next diff
		// make sure to clone it if it's reactive, since the user likely wants
		// to mutate it.
		vnode.data.normalizedStyle = isDef(style.__ob__) ?
			extend({}, style) :
			style;

		var newStyle = getStyle(vnode, true);

		for(name in oldStyle) {
			if(isUndef(newStyle[name])) {
				setProp(el, name, '');
			}
		}
		for(name in newStyle) {
			cur = newStyle[name];
			if(cur !== oldStyle[name]) {
				// ie9 setting to null has no effect, must use empty string
				setProp(el, name, cur == null ? '' : cur);
			}
		}
	}

	var style = {
		create: updateStyle,
		update: updateStyle
	};

	/*  */

	var whitespaceRE = /\s+/;

	/**
	 * Add class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function addClass(el, cls) {
		/* istanbul ignore if */
		if(!cls || !(cls = cls.trim())) {
			return
		}

		/* istanbul ignore else */
		if(el.classList) {
			if(cls.indexOf(' ') > -1) {
				cls.split(whitespaceRE).forEach(function(c) {
					return el.classList.add(c);
				});
			} else {
				el.classList.add(cls);
			}
		} else {
			var cur = " " + (el.getAttribute('class') || '') + " ";
			if(cur.indexOf(' ' + cls + ' ') < 0) {
				el.setAttribute('class', (cur + cls).trim());
			}
		}
	}

	/**
	 * Remove class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function removeClass(el, cls) {
		/* istanbul ignore if */
		if(!cls || !(cls = cls.trim())) {
			return
		}

		/* istanbul ignore else */
		if(el.classList) {
			if(cls.indexOf(' ') > -1) {
				cls.split(whitespaceRE).forEach(function(c) {
					return el.classList.remove(c);
				});
			} else {
				el.classList.remove(cls);
			}
			if(!el.classList.length) {
				el.removeAttribute('class');
			}
		} else {
			var cur = " " + (el.getAttribute('class') || '') + " ";
			var tar = ' ' + cls + ' ';
			while(cur.indexOf(tar) >= 0) {
				cur = cur.replace(tar, ' ');
			}
			cur = cur.trim();
			if(cur) {
				el.setAttribute('class', cur);
			} else {
				el.removeAttribute('class');
			}
		}
	}

	/*  */

	function resolveTransition(def$$1) {
		if(!def$$1) {
			return
		}
		/* istanbul ignore else */
		if(typeof def$$1 === 'object') {
			var res = {};
			if(def$$1.css !== false) {
				extend(res, autoCssTransition(def$$1.name || 'v'));
			}
			extend(res, def$$1);
			return res
		} else if(typeof def$$1 === 'string') {
			return autoCssTransition(def$$1)
		}
	}

	var autoCssTransition = cached(function(name) {
		return {
			enterClass: (name + "-enter"),
			enterToClass: (name + "-enter-to"),
			enterActiveClass: (name + "-enter-active"),
			leaveClass: (name + "-leave"),
			leaveToClass: (name + "-leave-to"),
			leaveActiveClass: (name + "-leave-active")
		}
	});

	var hasTransition = inBrowser && !isIE9;
	var TRANSITION = 'transition';
	var ANIMATION = 'animation';

	// Transition property/event sniffing
	var transitionProp = 'transition';
	var transitionEndEvent = 'transitionend';
	var animationProp = 'animation';
	var animationEndEvent = 'animationend';
	if(hasTransition) {
		/* istanbul ignore if */
		if(window.ontransitionend === undefined &&
			window.onwebkittransitionend !== undefined
		) {
			transitionProp = 'WebkitTransition';
			transitionEndEvent = 'webkitTransitionEnd';
		}
		if(window.onanimationend === undefined &&
			window.onwebkitanimationend !== undefined
		) {
			animationProp = 'WebkitAnimation';
			animationEndEvent = 'webkitAnimationEnd';
		}
	}

	// binding to window is necessary to make hot reload work in IE in strict mode
	var raf = inBrowser ?
		window.requestAnimationFrame ?
		window.requestAnimationFrame.bind(window) :
		setTimeout :
		/* istanbul ignore next */ function(fn) {
			return fn();
		};

	function nextFrame(fn) {
		raf(function() {
			raf(fn);
		});
	}

	function addTransitionClass(el, cls) {
		var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
		if(transitionClasses.indexOf(cls) < 0) {
			transitionClasses.push(cls);
			addClass(el, cls);
		}
	}

	function removeTransitionClass(el, cls) {
		if(el._transitionClasses) {
			remove(el._transitionClasses, cls);
		}
		removeClass(el, cls);
	}

	function whenTransitionEnds(
		el,
		expectedType,
		cb
	) {
		var ref = getTransitionInfo(el, expectedType);
		var type = ref.type;
		var timeout = ref.timeout;
		var propCount = ref.propCount;
		if(!type) {
			return cb()
		}
		var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
		var ended = 0;
		var end = function() {
			el.removeEventListener(event, onEnd);
			cb();
		};
		var onEnd = function(e) {
			if(e.target === el) {
				if(++ended >= propCount) {
					end();
				}
			}
		};
		setTimeout(function() {
			if(ended < propCount) {
				end();
			}
		}, timeout + 1);
		el.addEventListener(event, onEnd);
	}

	var transformRE = /\b(transform|all)(,|$)/;

	function getTransitionInfo(el, expectedType) {
		var styles = window.getComputedStyle(el);
		// JSDOM may return undefined for transition properties
		var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
		var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
		var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
		var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
		var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
		var animationTimeout = getTimeout(animationDelays, animationDurations);

		var type;
		var timeout = 0;
		var propCount = 0;
		/* istanbul ignore if */
		if(expectedType === TRANSITION) {
			if(transitionTimeout > 0) {
				type = TRANSITION;
				timeout = transitionTimeout;
				propCount = transitionDurations.length;
			}
		} else if(expectedType === ANIMATION) {
			if(animationTimeout > 0) {
				type = ANIMATION;
				timeout = animationTimeout;
				propCount = animationDurations.length;
			}
		} else {
			timeout = Math.max(transitionTimeout, animationTimeout);
			type = timeout > 0 ?
				transitionTimeout > animationTimeout ?
				TRANSITION :
				ANIMATION :
				null;
			propCount = type ?
				type === TRANSITION ?
				transitionDurations.length :
				animationDurations.length :
				0;
		}
		var hasTransform =
			type === TRANSITION &&
			transformRE.test(styles[transitionProp + 'Property']);
		return {
			type: type,
			timeout: timeout,
			propCount: propCount,
			hasTransform: hasTransform
		}
	}

	function getTimeout(delays, durations) {
		/* istanbul ignore next */
		while(delays.length < durations.length) {
			delays = delays.concat(delays);
		}

		return Math.max.apply(null, durations.map(function(d, i) {
			return toMs(d) + toMs(delays[i])
		}))
	}

	// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
	// in a locale-dependent way, using a comma instead of a dot.
	// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
	// as a floor function) causing unexpected behaviors
	function toMs(s) {
		return Number(s.slice(0, -1).replace(',', '.')) * 1000
	}

	/*  */

	function enter(vnode, toggleDisplay) {
		var el = vnode.elm;

		// call leave callback now
		if(isDef(el._leaveCb)) {
			el._leaveCb.cancelled = true;
			el._leaveCb();
		}

		var data = resolveTransition(vnode.data.transition);
		if(isUndef(data)) {
			return
		}

		/* istanbul ignore if */
		if(isDef(el._enterCb) || el.nodeType !== 1) {
			return
		}

		var css = data.css;
		var type = data.type;
		var enterClass = data.enterClass;
		var enterToClass = data.enterToClass;
		var enterActiveClass = data.enterActiveClass;
		var appearClass = data.appearClass;
		var appearToClass = data.appearToClass;
		var appearActiveClass = data.appearActiveClass;
		var beforeEnter = data.beforeEnter;
		var enter = data.enter;
		var afterEnter = data.afterEnter;
		var enterCancelled = data.enterCancelled;
		var beforeAppear = data.beforeAppear;
		var appear = data.appear;
		var afterAppear = data.afterAppear;
		var appearCancelled = data.appearCancelled;
		var duration = data.duration;

		// activeInstance will always be the <transition> component managing this
		// transition. One edge case to check is when the <transition> is placed
		// as the root node of a child component. In that case we need to check
		// <transition>'s parent for appear check.
		var context = activeInstance;
		var transitionNode = activeInstance.$vnode;
		while(transitionNode && transitionNode.parent) {
			context = transitionNode.context;
			transitionNode = transitionNode.parent;
		}

		var isAppear = !context._isMounted || !vnode.isRootInsert;

		if(isAppear && !appear && appear !== '') {
			return
		}

		var startClass = isAppear && appearClass ?
			appearClass :
			enterClass;
		var activeClass = isAppear && appearActiveClass ?
			appearActiveClass :
			enterActiveClass;
		var toClass = isAppear && appearToClass ?
			appearToClass :
			enterToClass;

		var beforeEnterHook = isAppear ?
			(beforeAppear || beforeEnter) :
			beforeEnter;
		var enterHook = isAppear ?
			(typeof appear === 'function' ? appear : enter) :
			enter;
		var afterEnterHook = isAppear ?
			(afterAppear || afterEnter) :
			afterEnter;
		var enterCancelledHook = isAppear ?
			(appearCancelled || enterCancelled) :
			enterCancelled;

		var explicitEnterDuration = toNumber(
			isObject(duration) ?
			duration.enter :
			duration
		);

		if(explicitEnterDuration != null) {
			checkDuration(explicitEnterDuration, 'enter', vnode);
		}

		var expectsCSS = css !== false && !isIE9;
		var userWantsControl = getHookArgumentsLength(enterHook);

		var cb = el._enterCb = once(function() {
			if(expectsCSS) {
				removeTransitionClass(el, toClass);
				removeTransitionClass(el, activeClass);
			}
			if(cb.cancelled) {
				if(expectsCSS) {
					removeTransitionClass(el, startClass);
				}
				enterCancelledHook && enterCancelledHook(el);
			} else {
				afterEnterHook && afterEnterHook(el);
			}
			el._enterCb = null;
		});

		if(!vnode.data.show) {
			// remove pending leave element on enter by injecting an insert hook
			mergeVNodeHook(vnode, 'insert', function() {
				var parent = el.parentNode;
				var pendingNode = parent && parent._pending && parent._pending[vnode.key];
				if(pendingNode &&
					pendingNode.tag === vnode.tag &&
					pendingNode.elm._leaveCb
				) {
					pendingNode.elm._leaveCb();
				}
				enterHook && enterHook(el, cb);
			});
		}

		// start enter transition
		beforeEnterHook && beforeEnterHook(el);
		if(expectsCSS) {
			addTransitionClass(el, startClass);
			addTransitionClass(el, activeClass);
			nextFrame(function() {
				removeTransitionClass(el, startClass);
				if(!cb.cancelled) {
					addTransitionClass(el, toClass);
					if(!userWantsControl) {
						if(isValidDuration(explicitEnterDuration)) {
							setTimeout(cb, explicitEnterDuration);
						} else {
							whenTransitionEnds(el, type, cb);
						}
					}
				}
			});
		}

		if(vnode.data.show) {
			toggleDisplay && toggleDisplay();
			enterHook && enterHook(el, cb);
		}

		if(!expectsCSS && !userWantsControl) {
			cb();
		}
	}

	function leave(vnode, rm) {
		var el = vnode.elm;

		// call enter callback now
		if(isDef(el._enterCb)) {
			el._enterCb.cancelled = true;
			el._enterCb();
		}

		var data = resolveTransition(vnode.data.transition);
		if(isUndef(data) || el.nodeType !== 1) {
			return rm()
		}

		/* istanbul ignore if */
		if(isDef(el._leaveCb)) {
			return
		}

		var css = data.css;
		var type = data.type;
		var leaveClass = data.leaveClass;
		var leaveToClass = data.leaveToClass;
		var leaveActiveClass = data.leaveActiveClass;
		var beforeLeave = data.beforeLeave;
		var leave = data.leave;
		var afterLeave = data.afterLeave;
		var leaveCancelled = data.leaveCancelled;
		var delayLeave = data.delayLeave;
		var duration = data.duration;

		var expectsCSS = css !== false && !isIE9;
		var userWantsControl = getHookArgumentsLength(leave);

		var explicitLeaveDuration = toNumber(
			isObject(duration) ?
			duration.leave :
			duration
		);

		if(isDef(explicitLeaveDuration)) {
			checkDuration(explicitLeaveDuration, 'leave', vnode);
		}

		var cb = el._leaveCb = once(function() {
			if(el.parentNode && el.parentNode._pending) {
				el.parentNode._pending[vnode.key] = null;
			}
			if(expectsCSS) {
				removeTransitionClass(el, leaveToClass);
				removeTransitionClass(el, leaveActiveClass);
			}
			if(cb.cancelled) {
				if(expectsCSS) {
					removeTransitionClass(el, leaveClass);
				}
				leaveCancelled && leaveCancelled(el);
			} else {
				rm();
				afterLeave && afterLeave(el);
			}
			el._leaveCb = null;
		});

		if(delayLeave) {
			delayLeave(performLeave);
		} else {
			performLeave();
		}

		function performLeave() {
			// the delayed leave may have already been cancelled
			if(cb.cancelled) {
				return
			}
			// record leaving element
			if(!vnode.data.show && el.parentNode) {
				(el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
			}
			beforeLeave && beforeLeave(el);
			if(expectsCSS) {
				addTransitionClass(el, leaveClass);
				addTransitionClass(el, leaveActiveClass);
				nextFrame(function() {
					removeTransitionClass(el, leaveClass);
					if(!cb.cancelled) {
						addTransitionClass(el, leaveToClass);
						if(!userWantsControl) {
							if(isValidDuration(explicitLeaveDuration)) {
								setTimeout(cb, explicitLeaveDuration);
							} else {
								whenTransitionEnds(el, type, cb);
							}
						}
					}
				});
			}
			leave && leave(el, cb);
			if(!expectsCSS && !userWantsControl) {
				cb();
			}
		}
	}

	// only used in dev mode
	function checkDuration(val, name, vnode) {
		if(typeof val !== 'number') {
			warn(
				"<transition> explicit " + name + " duration is not a valid number - " +
				"got " + (JSON.stringify(val)) + ".",
				vnode.context
			);
		} else if(isNaN(val)) {
			warn(
				"<transition> explicit " + name + " duration is NaN - " +
				'the duration expression might be incorrect.',
				vnode.context
			);
		}
	}

	function isValidDuration(val) {
		return typeof val === 'number' && !isNaN(val)
	}

	/**
	 * Normalize a transition hook's argument length. The hook may be:
	 * - a merged hook (invoker) with the original in .fns
	 * - a wrapped component method (check ._length)
	 * - a plain function (.length)
	 */
	function getHookArgumentsLength(fn) {
		if(isUndef(fn)) {
			return false
		}
		var invokerFns = fn.fns;
		if(isDef(invokerFns)) {
			// invoker
			return getHookArgumentsLength(
				Array.isArray(invokerFns) ?
				invokerFns[0] :
				invokerFns
			)
		} else {
			return(fn._length || fn.length) > 1
		}
	}

	function _enter(_, vnode) {
		if(vnode.data.show !== true) {
			enter(vnode);
		}
	}

	var transition = inBrowser ? {
		create: _enter,
		activate: _enter,
		remove: function remove$$1(vnode, rm) {
			/* istanbul ignore else */
			if(vnode.data.show !== true) {
				leave(vnode, rm);
			} else {
				rm();
			}
		}
	} : {};

	var platformModules = [
		attrs,
		klass,
		events,
		domProps,
		style,
		transition
	];

	/*  */

	// the directive module should be applied last, after all
	// built-in modules have been applied.
	var modules = platformModules.concat(baseModules);

	var patch = createPatchFunction({
		nodeOps: nodeOps,
		modules: modules
	});

	/**
	 * Not type checking this file because flow doesn't like attaching
	 * properties to Elements.
	 */

	/* istanbul ignore if */
	if(isIE9) {
		// http://www.matts411.com/post/internet-explorer-9-oninput/
		document.addEventListener('selectionchange', function() {
			var el = document.activeElement;
			if(el && el.vmodel) {
				trigger(el, 'input');
			}
		});
	}

	var directive = {
		inserted: function inserted(el, binding, vnode, oldVnode) {
			if(vnode.tag === 'select') {
				// #6903
				if(oldVnode.elm && !oldVnode.elm._vOptions) {
					mergeVNodeHook(vnode, 'postpatch', function() {
						directive.componentUpdated(el, binding, vnode);
					});
				} else {
					setSelected(el, binding, vnode.context);
				}
				el._vOptions = [].map.call(el.options, getValue);
			} else if(vnode.tag === 'textarea' || isTextInputType(el.type)) {
				el._vModifiers = binding.modifiers;
				if(!binding.modifiers.lazy) {
					el.addEventListener('compositionstart', onCompositionStart);
					el.addEventListener('compositionend', onCompositionEnd);
					// Safari < 10.2 & UIWebView doesn't fire compositionend when
					// switching focus before confirming composition choice
					// this also fixes the issue where some browsers e.g. iOS Chrome
					// fires "change" instead of "input" on autocomplete.
					el.addEventListener('change', onCompositionEnd);
					/* istanbul ignore if */
					if(isIE9) {
						el.vmodel = true;
					}
				}
			}
		},

		componentUpdated: function componentUpdated(el, binding, vnode) {
			if(vnode.tag === 'select') {
				setSelected(el, binding, vnode.context);
				// in case the options rendered by v-for have changed,
				// it's possible that the value is out-of-sync with the rendered options.
				// detect such cases and filter out values that no longer has a matching
				// option in the DOM.
				var prevOptions = el._vOptions;
				var curOptions = el._vOptions = [].map.call(el.options, getValue);
				if(curOptions.some(function(o, i) {
						return !looseEqual(o, prevOptions[i]);
					})) {
					// trigger change event if
					// no matching option found for at least one value
					var needReset = el.multiple ?
						binding.value.some(function(v) {
							return hasNoMatchingOption(v, curOptions);
						}) :
						binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
					if(needReset) {
						trigger(el, 'change');
					}
				}
			}
		}
	};

	function setSelected(el, binding, vm) {
		actuallySetSelected(el, binding, vm);
		/* istanbul ignore if */
		if(isIE || isEdge) {
			setTimeout(function() {
				actuallySetSelected(el, binding, vm);
			}, 0);
		}
	}

	function actuallySetSelected(el, binding, vm) {
		var value = binding.value;
		var isMultiple = el.multiple;
		if(isMultiple && !Array.isArray(value)) {
			warn(
				"<select multiple v-model=\"" + (binding.expression) + "\"> " +
				"expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
				vm
			);
			return
		}
		var selected, option;
		for(var i = 0, l = el.options.length; i < l; i++) {
			option = el.options[i];
			if(isMultiple) {
				selected = looseIndexOf(value, getValue(option)) > -1;
				if(option.selected !== selected) {
					option.selected = selected;
				}
			} else {
				if(looseEqual(getValue(option), value)) {
					if(el.selectedIndex !== i) {
						el.selectedIndex = i;
					}
					return
				}
			}
		}
		if(!isMultiple) {
			el.selectedIndex = -1;
		}
	}

	function hasNoMatchingOption(value, options) {
		return options.every(function(o) {
			return !looseEqual(o, value);
		})
	}

	function getValue(option) {
		return '_value' in option ?
			option._value :
			option.value
	}

	function onCompositionStart(e) {
		e.target.composing = true;
	}

	function onCompositionEnd(e) {
		// prevent triggering an input event for no reason
		if(!e.target.composing) {
			return
		}
		e.target.composing = false;
		trigger(e.target, 'input');
	}

	function trigger(el, type) {
		var e = document.createEvent('HTMLEvents');
		e.initEvent(type, true, true);
		el.dispatchEvent(e);
	}

	/*  */

	// recursively search for possible transition defined inside the component root
	function locateNode(vnode) {
		return vnode.componentInstance && (!vnode.data || !vnode.data.transition) ?
			locateNode(vnode.componentInstance._vnode) :
			vnode
	}

	var show = {
		bind: function bind(el, ref, vnode) {
			var value = ref.value;

			vnode = locateNode(vnode);
			var transition$$1 = vnode.data && vnode.data.transition;
			var originalDisplay = el.__vOriginalDisplay =
				el.style.display === 'none' ? '' : el.style.display;
			if(value && transition$$1) {
				vnode.data.show = true;
				enter(vnode, function() {
					el.style.display = originalDisplay;
				});
			} else {
				el.style.display = value ? originalDisplay : 'none';
			}
		},

		update: function update(el, ref, vnode) {
			var value = ref.value;
			var oldValue = ref.oldValue;

			/* istanbul ignore if */
			if(!value === !oldValue) {
				return
			}
			vnode = locateNode(vnode);
			var transition$$1 = vnode.data && vnode.data.transition;
			if(transition$$1) {
				vnode.data.show = true;
				if(value) {
					enter(vnode, function() {
						el.style.display = el.__vOriginalDisplay;
					});
				} else {
					leave(vnode, function() {
						el.style.display = 'none';
					});
				}
			} else {
				el.style.display = value ? el.__vOriginalDisplay : 'none';
			}
		},

		unbind: function unbind(
			el,
			binding,
			vnode,
			oldVnode,
			isDestroy
		) {
			if(!isDestroy) {
				el.style.display = el.__vOriginalDisplay;
			}
		}
	};

	var platformDirectives = {
		model: directive,
		show: show
	};

	/*  */

	var transitionProps = {
		name: String,
		appear: Boolean,
		css: Boolean,
		mode: String,
		type: String,
		enterClass: String,
		leaveClass: String,
		enterToClass: String,
		leaveToClass: String,
		enterActiveClass: String,
		leaveActiveClass: String,
		appearClass: String,
		appearActiveClass: String,
		appearToClass: String,
		duration: [Number, String, Object]
	};

	// in case the child is also an abstract component, e.g. <keep-alive>
	// we want to recursively retrieve the real component to be rendered
	function getRealChild(vnode) {
		var compOptions = vnode && vnode.componentOptions;
		if(compOptions && compOptions.Ctor.options.abstract) {
			return getRealChild(getFirstComponentChild(compOptions.children))
		} else {
			return vnode
		}
	}

	function extractTransitionData(comp) {
		var data = {};
		var options = comp.$options;
		// props
		for(var key in options.propsData) {
			data[key] = comp[key];
		}
		// events.
		// extract listeners and pass them directly to the transition methods
		var listeners = options._parentListeners;
		for(var key$1 in listeners) {
			data[camelize(key$1)] = listeners[key$1];
		}
		return data
	}

	function placeholder(h, rawChild) {
		if(/\d-keep-alive$/.test(rawChild.tag)) {
			return h('keep-alive', {
				props: rawChild.componentOptions.propsData
			})
		}
	}

	function hasParentTransition(vnode) {
		while((vnode = vnode.parent)) {
			if(vnode.data.transition) {
				return true
			}
		}
	}

	function isSameChild(child, oldChild) {
		return oldChild.key === child.key && oldChild.tag === child.tag
	}

	var isNotTextNode = function(c) {
		return c.tag || isAsyncPlaceholder(c);
	};

	var isVShowDirective = function(d) {
		return d.name === 'show';
	};

	var Transition = {
		name: 'transition',
		props: transitionProps,
		abstract: true,

		render: function render(h) {
			var this$1 = this;

			var children = this.$slots.default;
			if(!children) {
				return
			}

			// filter out text nodes (possible whitespaces)
			children = children.filter(isNotTextNode);
			/* istanbul ignore if */
			if(!children.length) {
				return
			}

			// warn multiple elements
			if(children.length > 1) {
				warn(
					'<transition> can only be used on a single element. Use ' +
					'<transition-group> for lists.',
					this.$parent
				);
			}

			var mode = this.mode;

			// warn invalid mode
			if(mode && mode !== 'in-out' && mode !== 'out-in') {
				warn(
					'invalid <transition> mode: ' + mode,
					this.$parent
				);
			}

			var rawChild = children[0];

			// if this is a component root node and the component's
			// parent container node also has transition, skip.
			if(hasParentTransition(this.$vnode)) {
				return rawChild
			}

			// apply transition data to child
			// use getRealChild() to ignore abstract components e.g. keep-alive
			var child = getRealChild(rawChild);
			/* istanbul ignore if */
			if(!child) {
				return rawChild
			}

			if(this._leaving) {
				return placeholder(h, rawChild)
			}

			// ensure a key that is unique to the vnode type and to this transition
			// component instance. This key will be used to remove pending leaving nodes
			// during entering.
			var id = "__transition-" + (this._uid) + "-";
			child.key = child.key == null ?
				child.isComment ?
				id + 'comment' :
				id + child.tag :
				isPrimitive(child.key) ?
				(String(child.key).indexOf(id) === 0 ? child.key : id + child.key) :
				child.key;

			var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
			var oldRawChild = this._vnode;
			var oldChild = getRealChild(oldRawChild);

			// mark v-show
			// so that the transition module can hand over the control to the directive
			if(child.data.directives && child.data.directives.some(isVShowDirective)) {
				child.data.show = true;
			}

			if(
				oldChild &&
				oldChild.data &&
				!isSameChild(child, oldChild) &&
				!isAsyncPlaceholder(oldChild) &&
				// #6687 component root is a comment node
				!(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
			) {
				// replace old child transition data with fresh one
				// important for dynamic transitions!
				var oldData = oldChild.data.transition = extend({}, data);
				// handle transition mode
				if(mode === 'out-in') {
					// return placeholder node and queue update when leave finishes
					this._leaving = true;
					mergeVNodeHook(oldData, 'afterLeave', function() {
						this$1._leaving = false;
						this$1.$forceUpdate();
					});
					return placeholder(h, rawChild)
				} else if(mode === 'in-out') {
					if(isAsyncPlaceholder(child)) {
						return oldRawChild
					}
					var delayedLeave;
					var performLeave = function() {
						delayedLeave();
					};
					mergeVNodeHook(data, 'afterEnter', performLeave);
					mergeVNodeHook(data, 'enterCancelled', performLeave);
					mergeVNodeHook(oldData, 'delayLeave', function(leave) {
						delayedLeave = leave;
					});
				}
			}

			return rawChild
		}
	};

	/*  */

	var props = extend({
		tag: String,
		moveClass: String
	}, transitionProps);

	delete props.mode;

	var TransitionGroup = {
		props: props,

		beforeMount: function beforeMount() {
			var this$1 = this;

			var update = this._update;
			this._update = function(vnode, hydrating) {
				var restoreActiveInstance = setActiveInstance(this$1);
				// force removing pass
				this$1.__patch__(
					this$1._vnode,
					this$1.kept,
					false, // hydrating
					true // removeOnly (!important, avoids unnecessary moves)
				);
				this$1._vnode = this$1.kept;
				restoreActiveInstance();
				update.call(this$1, vnode, hydrating);
			};
		},

		render: function render(h) {
			var tag = this.tag || this.$vnode.data.tag || 'span';
			var map = Object.create(null);
			var prevChildren = this.prevChildren = this.children;
			var rawChildren = this.$slots.default || [];
			var children = this.children = [];
			var transitionData = extractTransitionData(this);

			for(var i = 0; i < rawChildren.length; i++) {
				var c = rawChildren[i];
				if(c.tag) {
					if(c.key != null && String(c.key).indexOf('__vlist') !== 0) {
						children.push(c);
						map[c.key] = c;
						(c.data || (c.data = {})).transition = transitionData;
					} else {
						var opts = c.componentOptions;
						var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
						warn(("<transition-group> children must be keyed: <" + name + ">"));
					}
				}
			}

			if(prevChildren) {
				var kept = [];
				var removed = [];
				for(var i$1 = 0; i$1 < prevChildren.length; i$1++) {
					var c$1 = prevChildren[i$1];
					c$1.data.transition = transitionData;
					c$1.data.pos = c$1.elm.getBoundingClientRect();
					if(map[c$1.key]) {
						kept.push(c$1);
					} else {
						removed.push(c$1);
					}
				}
				this.kept = h(tag, null, kept);
				this.removed = removed;
			}

			return h(tag, null, children)
		},

		updated: function updated() {
			var children = this.prevChildren;
			var moveClass = this.moveClass || ((this.name || 'v') + '-move');
			if(!children.length || !this.hasMove(children[0].elm, moveClass)) {
				return
			}

			// we divide the work into three loops to avoid mixing DOM reads and writes
			// in each iteration - which helps prevent layout thrashing.
			children.forEach(callPendingCbs);
			children.forEach(recordPosition);
			children.forEach(applyTranslation);

			// force reflow to put everything in position
			// assign to this to avoid being removed in tree-shaking
			// $flow-disable-line
			this._reflow = document.body.offsetHeight;

			children.forEach(function(c) {
				if(c.data.moved) {
					var el = c.elm;
					var s = el.style;
					addTransitionClass(el, moveClass);
					s.transform = s.WebkitTransform = s.transitionDuration = '';
					el.addEventListener(transitionEndEvent, el._moveCb = function cb(e) {
						if(e && e.target !== el) {
							return
						}
						if(!e || /transform$/.test(e.propertyName)) {
							el.removeEventListener(transitionEndEvent, cb);
							el._moveCb = null;
							removeTransitionClass(el, moveClass);
						}
					});
				}
			});
		},

		methods: {
			hasMove: function hasMove(el, moveClass) {
				/* istanbul ignore if */
				if(!hasTransition) {
					return false
				}
				/* istanbul ignore if */
				if(this._hasMove) {
					return this._hasMove
				}
				// Detect whether an element with the move class applied has
				// CSS transitions. Since the element may be inside an entering
				// transition at this very moment, we make a clone of it and remove
				// all other transition classes applied to ensure only the move class
				// is applied.
				var clone = el.cloneNode();
				if(el._transitionClasses) {
					el._transitionClasses.forEach(function(cls) {
						removeClass(clone, cls);
					});
				}
				addClass(clone, moveClass);
				clone.style.display = 'none';
				this.$el.appendChild(clone);
				var info = getTransitionInfo(clone);
				this.$el.removeChild(clone);
				return(this._hasMove = info.hasTransform)
			}
		}
	};

	function callPendingCbs(c) {
		/* istanbul ignore if */
		if(c.elm._moveCb) {
			c.elm._moveCb();
		}
		/* istanbul ignore if */
		if(c.elm._enterCb) {
			c.elm._enterCb();
		}
	}

	function recordPosition(c) {
		c.data.newPos = c.elm.getBoundingClientRect();
	}

	function applyTranslation(c) {
		var oldPos = c.data.pos;
		var newPos = c.data.newPos;
		var dx = oldPos.left - newPos.left;
		var dy = oldPos.top - newPos.top;
		if(dx || dy) {
			c.data.moved = true;
			var s = c.elm.style;
			s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
			s.transitionDuration = '0s';
		}
	}

	var platformComponents = {
		Transition: Transition,
		TransitionGroup: TransitionGroup
	};

	/*  */

	// install platform specific utils
	Vue.config.mustUseProp = mustUseProp;
	Vue.config.isReservedTag = isReservedTag;
	Vue.config.isReservedAttr = isReservedAttr;
	Vue.config.getTagNamespace = getTagNamespace;
	Vue.config.isUnknownElement = isUnknownElement;

	// install platform runtime directives & components
	extend(Vue.options.directives, platformDirectives);
	extend(Vue.options.components, platformComponents);

	// install platform patch function
	Vue.prototype.__patch__ = inBrowser ? patch : noop;

	// public mount method
	Vue.prototype.$mount = function(
		el,
		hydrating
	) {
		el = el && inBrowser ? query(el) : undefined;
		return mountComponent(this, el, hydrating)
	};

	// devtools global hook
	/* istanbul ignore next */
	if(inBrowser) {
		setTimeout(function() {
			if(config.devtools) {
				if(devtools) {
					devtools.emit('init', Vue);
				} else {
					console[console.info ? 'info' : 'log'](
						'Download the Vue Devtools extension for a better development experience:\n' +
						'https://github.com/vuejs/vue-devtools'
					);
				}
			}
			if(config.productionTip !== false &&
				typeof console !== 'undefined'
			) {
				console[console.info ? 'info' : 'log'](
					"You are running Vue in development mode.\n" +
					"Make sure to turn on production mode when deploying for production.\n" +
					"See more tips at https://vuejs.org/guide/deployment.html"
				);
			}
		}, 0);
	}

	/*  */

	var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
	var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;

	var buildRegex = cached(function(delimiters) {
		var open = delimiters[0].replace(regexEscapeRE, '\\$&');
		var close = delimiters[1].replace(regexEscapeRE, '\\$&');
		return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
	});

	function parseText(
		text,
		delimiters
	) {
		var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
		if(!tagRE.test(text)) {
			return
		}
		var tokens = [];
		var rawTokens = [];
		var lastIndex = tagRE.lastIndex = 0;
		var match, index, tokenValue;
		while((match = tagRE.exec(text))) {
			index = match.index;
			// push text token
			if(index > lastIndex) {
				rawTokens.push(tokenValue = text.slice(lastIndex, index));
				tokens.push(JSON.stringify(tokenValue));
			}
			// tag token
			var exp = parseFilters(match[1].trim());
			tokens.push(("_s(" + exp + ")"));
			rawTokens.push({
				'@binding': exp
			});
			lastIndex = index + match[0].length;
		}
		if(lastIndex < text.length) {
			rawTokens.push(tokenValue = text.slice(lastIndex));
			tokens.push(JSON.stringify(tokenValue));
		}
		return {
			expression: tokens.join('+'),
			tokens: rawTokens
		}
	}

	/*  */

	function transformNode(el, options) {
		var warn = options.warn || baseWarn;
		var staticClass = getAndRemoveAttr(el, 'class');
		if(staticClass) {
			var res = parseText(staticClass, options.delimiters);
			if(res) {
				warn(
					"class=\"" + staticClass + "\": " +
					'Interpolation inside attributes has been removed. ' +
					'Use v-bind or the colon shorthand instead. For example, ' +
					'instead of <div class="{{ val }}">, use <div :class="val">.',
					el.rawAttrsMap['class']
				);
			}
		}
		if(staticClass) {
			el.staticClass = JSON.stringify(staticClass);
		}
		var classBinding = getBindingAttr(el, 'class', false /* getStatic */ );
		if(classBinding) {
			el.classBinding = classBinding;
		}
	}

	function genData(el) {
		var data = '';
		if(el.staticClass) {
			data += "staticClass:" + (el.staticClass) + ",";
		}
		if(el.classBinding) {
			data += "class:" + (el.classBinding) + ",";
		}
		return data
	}

	var klass$1 = {
		staticKeys: ['staticClass'],
		transformNode: transformNode,
		genData: genData
	};

	/*  */

	function transformNode$1(el, options) {
		var warn = options.warn || baseWarn;
		var staticStyle = getAndRemoveAttr(el, 'style');
		if(staticStyle) {
			/* istanbul ignore if */
			{
				var res = parseText(staticStyle, options.delimiters);
				if(res) {
					warn(
						"style=\"" + staticStyle + "\": " +
						'Interpolation inside attributes has been removed. ' +
						'Use v-bind or the colon shorthand instead. For example, ' +
						'instead of <div style="{{ val }}">, use <div :style="val">.',
						el.rawAttrsMap['style']
					);
				}
			}
			el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
		}

		var styleBinding = getBindingAttr(el, 'style', false /* getStatic */ );
		if(styleBinding) {
			el.styleBinding = styleBinding;
		}
	}

	function genData$1(el) {
		var data = '';
		if(el.staticStyle) {
			data += "staticStyle:" + (el.staticStyle) + ",";
		}
		if(el.styleBinding) {
			data += "style:(" + (el.styleBinding) + "),";
		}
		return data
	}

	var style$1 = {
		staticKeys: ['staticStyle'],
		transformNode: transformNode$1,
		genData: genData$1
	};

	/*  */

	var decoder;

	var he = {
		decode: function decode(html) {
			decoder = decoder || document.createElement('div');
			decoder.innerHTML = html;
			return decoder.textContent
		}
	};

	/*  */

	var isUnaryTag = makeMap(
		'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
		'link,meta,param,source,track,wbr'
	);

	// Elements that you can, intentionally, leave open
	// (and which close themselves)
	var canBeLeftOpenTag = makeMap(
		'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
	);

	// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
	// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
	var isNonPhrasingTag = makeMap(
		'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
		'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
		'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
		'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
		'title,tr,track'
	);

	/**
	 * Not type-checking this file because it's mostly vendor code.
	 */

	// Regular Expressions for parsing tags and attributes
	var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
	var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
	var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + (unicodeRegExp.source) + "]*";
	var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
	var startTagOpen = new RegExp(("^<" + qnameCapture));
	var startTagClose = /^\s*(\/?)>/;
	var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
	var doctype = /^<!DOCTYPE [^>]+>/i;
	// #7298: escape - to avoid being passed as HTML comment when inlined in page
	var comment = /^<!\--/;
	var conditionalComment = /^<!\[/;

	// Special Elements (can contain anything)
	var isPlainTextElement = makeMap('script,style,textarea', true);
	var reCache = {};

	var decodingMap = {
		'&lt;': '<',
		'&gt;': '>',
		'&quot;': '"',
		'&amp;': '&',
		'&#10;': '\n',
		'&#9;': '\t',
		'&#39;': "'"
	};
	var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
	var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;

	// #5992
	var isIgnoreNewlineTag = makeMap('pre,textarea', true);
	var shouldIgnoreFirstNewline = function(tag, html) {
		return tag && isIgnoreNewlineTag(tag) && html[0] === '\n';
	};

	function decodeAttr(value, shouldDecodeNewlines) {
		var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
		return value.replace(re, function(match) {
			return decodingMap[match];
		})
	}

	function parseHTML(html, options) {
		var stack = [];
		var expectHTML = options.expectHTML;
		var isUnaryTag$$1 = options.isUnaryTag || no;
		var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
		var index = 0;
		var last, lastTag;
		while(html) {
			last = html;
			// Make sure we're not in a plaintext content element like script/style
			if(!lastTag || !isPlainTextElement(lastTag)) {
				var textEnd = html.indexOf('<');
				if(textEnd === 0) {
					// Comment:
					if(comment.test(html)) {
						var commentEnd = html.indexOf('-->');

						if(commentEnd >= 0) {
							if(options.shouldKeepComment) {
								options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
							}
							advance(commentEnd + 3);
							continue
						}
					}

					// http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
					if(conditionalComment.test(html)) {
						var conditionalEnd = html.indexOf(']>');

						if(conditionalEnd >= 0) {
							advance(conditionalEnd + 2);
							continue
						}
					}

					// Doctype:
					var doctypeMatch = html.match(doctype);
					if(doctypeMatch) {
						advance(doctypeMatch[0].length);
						continue
					}

					// End tag:
					var endTagMatch = html.match(endTag);
					if(endTagMatch) {
						var curIndex = index;
						advance(endTagMatch[0].length);
						parseEndTag(endTagMatch[1], curIndex, index);
						continue
					}

					// Start tag:
					var startTagMatch = parseStartTag();
					if(startTagMatch) {
						handleStartTag(startTagMatch);
						if(shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
							advance(1);
						}
						continue
					}
				}

				var text = (void 0),
					rest = (void 0),
					next = (void 0);
				if(textEnd >= 0) {
					rest = html.slice(textEnd);
					while(!endTag.test(rest) &&
						!startTagOpen.test(rest) &&
						!comment.test(rest) &&
						!conditionalComment.test(rest)
					) {
						// < in plain text, be forgiving and treat it as text
						next = rest.indexOf('<', 1);
						if(next < 0) {
							break
						}
						textEnd += next;
						rest = html.slice(textEnd);
					}
					text = html.substring(0, textEnd);
				}

				if(textEnd < 0) {
					text = html;
				}

				if(text) {
					advance(text.length);
				}

				if(options.chars && text) {
					options.chars(text, index - text.length, index);
				}
			} else {
				var endTagLength = 0;
				var stackedTag = lastTag.toLowerCase();
				var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
				var rest$1 = html.replace(reStackedTag, function(all, text, endTag) {
					endTagLength = endTag.length;
					if(!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
						text = text
							.replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
							.replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
					}
					if(shouldIgnoreFirstNewline(stackedTag, text)) {
						text = text.slice(1);
					}
					if(options.chars) {
						options.chars(text);
					}
					return ''
				});
				index += html.length - rest$1.length;
				html = rest$1;
				parseEndTag(stackedTag, index - endTagLength, index);
			}

			if(html === last) {
				options.chars && options.chars(html);
				if(!stack.length && options.warn) {
					options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), {
						start: index + html.length
					});
				}
				break
			}
		}

		// Clean up any remaining tags
		parseEndTag();

		function advance(n) {
			index += n;
			html = html.substring(n);
		}

		function parseStartTag() {
			var start = html.match(startTagOpen);
			if(start) {
				var match = {
					tagName: start[1],
					attrs: [],
					start: index
				};
				advance(start[0].length);
				var end, attr;
				while(!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
					attr.start = index;
					advance(attr[0].length);
					attr.end = index;
					match.attrs.push(attr);
				}
				if(end) {
					match.unarySlash = end[1];
					advance(end[0].length);
					match.end = index;
					return match
				}
			}
		}

		function handleStartTag(match) {
			var tagName = match.tagName;
			var unarySlash = match.unarySlash;

			if(expectHTML) {
				if(lastTag === 'p' && isNonPhrasingTag(tagName)) {
					parseEndTag(lastTag);
				}
				if(canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
					parseEndTag(tagName);
				}
			}

			var unary = isUnaryTag$$1(tagName) || !!unarySlash;

			var l = match.attrs.length;
			var attrs = new Array(l);
			for(var i = 0; i < l; i++) {
				var args = match.attrs[i];
				var value = args[3] || args[4] || args[5] || '';
				var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href' ?
					options.shouldDecodeNewlinesForHref :
					options.shouldDecodeNewlines;
				attrs[i] = {
					name: args[1],
					value: decodeAttr(value, shouldDecodeNewlines)
				};
				if(options.outputSourceRange) {
					attrs[i].start = args.start + args[0].match(/^\s*/).length;
					attrs[i].end = args.end;
				}
			}

			if(!unary) {
				stack.push({
					tag: tagName,
					lowerCasedTag: tagName.toLowerCase(),
					attrs: attrs,
					start: match.start,
					end: match.end
				});
				lastTag = tagName;
			}

			if(options.start) {
				options.start(tagName, attrs, unary, match.start, match.end);
			}
		}

		function parseEndTag(tagName, start, end) {
			var pos, lowerCasedTagName;
			if(start == null) {
				start = index;
			}
			if(end == null) {
				end = index;
			}

			// Find the closest opened tag of the same type
			if(tagName) {
				lowerCasedTagName = tagName.toLowerCase();
				for(pos = stack.length - 1; pos >= 0; pos--) {
					if(stack[pos].lowerCasedTag === lowerCasedTagName) {
						break
					}
				}
			} else {
				// If no tag name is provided, clean shop
				pos = 0;
			}

			if(pos >= 0) {
				// Close all the open elements, up the stack
				for(var i = stack.length - 1; i >= pos; i--) {
					if(i > pos || !tagName &&
						options.warn
					) {
						options.warn(
							("tag <" + (stack[i].tag) + "> has no matching end tag."), {
								start: stack[i].start,
								end: stack[i].end
							}
						);
					}
					if(options.end) {
						options.end(stack[i].tag, start, end);
					}
				}

				// Remove the open elements from the stack
				stack.length = pos;
				lastTag = pos && stack[pos - 1].tag;
			} else if(lowerCasedTagName === 'br') {
				if(options.start) {
					options.start(tagName, [], true, start, end);
				}
			} else if(lowerCasedTagName === 'p') {
				if(options.start) {
					options.start(tagName, [], false, start, end);
				}
				if(options.end) {
					options.end(tagName, start, end);
				}
			}
		}
	}

	/*  */

	var onRE = /^@|^v-on:/;
	var dirRE = /^v-|^@|^:|^#/;
	var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
	var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
	var stripParensRE = /^\(|\)$/g;
	var dynamicArgRE = /^\[.*\]$/;

	var argRE = /:(.*)$/;
	var bindRE = /^:|^\.|^v-bind:/;
	var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g;

	var slotRE = /^v-slot(:|$)|^#/;

	var lineBreakRE = /[\r\n]/;
	var whitespaceRE$1 = /\s+/g;

	var invalidAttributeRE = /[\s"'<>\/=]/;

	var decodeHTMLCached = cached(he.decode);

	var emptySlotScopeToken = "_empty_";

	// configurable state
	var warn$2;
	var delimiters;
	var transforms;
	var preTransforms;
	var postTransforms;
	var platformIsPreTag;
	var platformMustUseProp;
	var platformGetTagNamespace;
	var maybeComponent;

	function createASTElement(
		tag,
		attrs,
		parent
	) {
		return {
			type: 1,
			tag: tag,
			attrsList: attrs,
			attrsMap: makeAttrsMap(attrs),
			rawAttrsMap: {},
			parent: parent,
			children: []
		}
	}

	/**
	 * Convert HTML string to AST.
	 */
	function parse(
		template,
		options
	) {
		warn$2 = options.warn || baseWarn;

		platformIsPreTag = options.isPreTag || no;
		platformMustUseProp = options.mustUseProp || no;
		platformGetTagNamespace = options.getTagNamespace || no;
		var isReservedTag = options.isReservedTag || no;
		maybeComponent = function(el) {
			return !!el.component || !isReservedTag(el.tag);
		};

		transforms = pluckModuleFunction(options.modules, 'transformNode');
		preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
		postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');

		delimiters = options.delimiters;

		var stack = [];
		var preserveWhitespace = options.preserveWhitespace !== false;
		var whitespaceOption = options.whitespace;
		var root;
		var currentParent;
		var inVPre = false;
		var inPre = false;
		var warned = false;

		function warnOnce(msg, range) {
			if(!warned) {
				warned = true;
				warn$2(msg, range);
			}
		}

		function closeElement(element) {
			trimEndingWhitespace(element);
			if(!inVPre && !element.processed) {
				element = processElement(element, options);
			}
			// tree management
			if(!stack.length && element !== root) {
				// allow root elements with v-if, v-else-if and v-else
				if(root.if && (element.elseif || element.else)) {
					{
						checkRootConstraints(element);
					}
					addIfCondition(root, {
						exp: element.elseif,
						block: element
					});
				} else {
					warnOnce(
						"Component template should contain exactly one root element. " +
						"If you are using v-if on multiple elements, " +
						"use v-else-if to chain them instead.", {
							start: element.start
						}
					);
				}
			}
			if(currentParent && !element.forbidden) {
				if(element.elseif || element.else) {
					processIfConditions(element, currentParent);
				} else {
					if(element.slotScope) {
						// scoped slot
						// keep it in the children list so that v-else(-if) conditions can
						// find it as the prev node.
						var name = element.slotTarget || '"default"';
						(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
					}
					currentParent.children.push(element);
					element.parent = currentParent;
				}
			}

			// final children cleanup
			// filter out scoped slots
			element.children = element.children.filter(function(c) {
				return !(c).slotScope;
			});
			// remove trailing whitespace node again
			trimEndingWhitespace(element);

			// check pre state
			if(element.pre) {
				inVPre = false;
			}
			if(platformIsPreTag(element.tag)) {
				inPre = false;
			}
			// apply post-transforms
			for(var i = 0; i < postTransforms.length; i++) {
				postTransforms[i](element, options);
			}
		}

		function trimEndingWhitespace(el) {
			// remove trailing whitespace node
			if(!inPre) {
				var lastNode;
				while(
					(lastNode = el.children[el.children.length - 1]) &&
					lastNode.type === 3 &&
					lastNode.text === ' '
				) {
					el.children.pop();
				}
			}
		}

		function checkRootConstraints(el) {
			if(el.tag === 'slot' || el.tag === 'template') {
				warnOnce(
					"Cannot use <" + (el.tag) + "> as component root element because it may " +
					'contain multiple nodes.', {
						start: el.start
					}
				);
			}
			if(el.attrsMap.hasOwnProperty('v-for')) {
				warnOnce(
					'Cannot use v-for on stateful component root element because ' +
					'it renders multiple elements.',
					el.rawAttrsMap['v-for']
				);
			}
		}

		parseHTML(template, {
			warn: warn$2,
			expectHTML: options.expectHTML,
			isUnaryTag: options.isUnaryTag,
			canBeLeftOpenTag: options.canBeLeftOpenTag,
			shouldDecodeNewlines: options.shouldDecodeNewlines,
			shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
			shouldKeepComment: options.comments,
			outputSourceRange: options.outputSourceRange,
			start: function start(tag, attrs, unary, start$1, end) {
				// check namespace.
				// inherit parent ns if there is one
				var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);

				// handle IE svg bug
				/* istanbul ignore if */
				if(isIE && ns === 'svg') {
					attrs = guardIESVGBug(attrs);
				}

				var element = createASTElement(tag, attrs, currentParent);
				if(ns) {
					element.ns = ns;
				}

				{
					if(options.outputSourceRange) {
						element.start = start$1;
						element.end = end;
						element.rawAttrsMap = element.attrsList.reduce(function(cumulated, attr) {
							cumulated[attr.name] = attr;
							return cumulated
						}, {});
					}
					attrs.forEach(function(attr) {
						if(invalidAttributeRE.test(attr.name)) {
							warn$2(
								"Invalid dynamic argument expression: attribute names cannot contain " +
								"spaces, quotes, <, >, / or =.", {
									start: attr.start + attr.name.indexOf("["),
									end: attr.start + attr.name.length
								}
							);
						}
					});
				}

				if(isForbiddenTag(element) && !isServerRendering()) {
					element.forbidden = true;
					warn$2(
						'Templates should only be responsible for mapping the state to the ' +
						'UI. Avoid placing tags with side-effects in your templates, such as ' +
						"<" + tag + ">" + ', as they will not be parsed.', {
							start: element.start
						}
					);
				}

				// apply pre-transforms
				for(var i = 0; i < preTransforms.length; i++) {
					element = preTransforms[i](element, options) || element;
				}

				if(!inVPre) {
					processPre(element);
					if(element.pre) {
						inVPre = true;
					}
				}
				if(platformIsPreTag(element.tag)) {
					inPre = true;
				}
				if(inVPre) {
					processRawAttrs(element);
				} else if(!element.processed) {
					// structural directives
					processFor(element);
					processIf(element);
					processOnce(element);
				}

				if(!root) {
					root = element; {
						checkRootConstraints(root);
					}
				}

				if(!unary) {
					currentParent = element;
					stack.push(element);
				} else {
					closeElement(element);
				}
			},

			end: function end(tag, start, end$1) {
				var element = stack[stack.length - 1];
				// pop stack
				stack.length -= 1;
				currentParent = stack[stack.length - 1];
				if(options.outputSourceRange) {
					element.end = end$1;
				}
				closeElement(element);
			},

			chars: function chars(text, start, end) {
				if(!currentParent) {
					{
						if(text === template) {
							warnOnce(
								'Component template requires a root element, rather than just text.', {
									start: start
								}
							);
						} else if((text = text.trim())) {
							warnOnce(
								("text \"" + text + "\" outside root element will be ignored."), {
									start: start
								}
							);
						}
					}
					return
				}
				// IE textarea placeholder bug
				/* istanbul ignore if */
				if(isIE &&
					currentParent.tag === 'textarea' &&
					currentParent.attrsMap.placeholder === text
				) {
					return
				}
				var children = currentParent.children;
				if(inPre || text.trim()) {
					text = isTextTag(currentParent) ? text : decodeHTMLCached(text);
				} else if(!children.length) {
					// remove the whitespace-only node right after an opening tag
					text = '';
				} else if(whitespaceOption) {
					if(whitespaceOption === 'condense') {
						// in condense mode, remove the whitespace node if it contains
						// line break, otherwise condense to a single space
						text = lineBreakRE.test(text) ? '' : ' ';
					} else {
						text = ' ';
					}
				} else {
					text = preserveWhitespace ? ' ' : '';
				}
				if(text) {
					if(!inPre && whitespaceOption === 'condense') {
						// condense consecutive whitespaces into single space
						text = text.replace(whitespaceRE$1, ' ');
					}
					var res;
					var child;
					if(!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
						child = {
							type: 2,
							expression: res.expression,
							tokens: res.tokens,
							text: text
						};
					} else if(text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
						child = {
							type: 3,
							text: text
						};
					}
					if(child) {
						if(options.outputSourceRange) {
							child.start = start;
							child.end = end;
						}
						children.push(child);
					}
				}
			},
			comment: function comment(text, start, end) {
				// adding anything as a sibling to the root node is forbidden
				// comments should still be allowed, but ignored
				if(currentParent) {
					var child = {
						type: 3,
						text: text,
						isComment: true
					};
					if(options.outputSourceRange) {
						child.start = start;
						child.end = end;
					}
					currentParent.children.push(child);
				}
			}
		});
		return root
	}

	function processPre(el) {
		if(getAndRemoveAttr(el, 'v-pre') != null) {
			el.pre = true;
		}
	}

	function processRawAttrs(el) {
		var list = el.attrsList;
		var len = list.length;
		if(len) {
			var attrs = el.attrs = new Array(len);
			for(var i = 0; i < len; i++) {
				attrs[i] = {
					name: list[i].name,
					value: JSON.stringify(list[i].value)
				};
				if(list[i].start != null) {
					attrs[i].start = list[i].start;
					attrs[i].end = list[i].end;
				}
			}
		} else if(!el.pre) {
			// non root node in pre blocks with no attributes
			el.plain = true;
		}
	}

	function processElement(
		element,
		options
	) {
		processKey(element);

		// determine whether this is a plain element after
		// removing structural attributes
		element.plain = (!element.key &&
			!element.scopedSlots &&
			!element.attrsList.length
		);

		processRef(element);
		processSlotContent(element);
		processSlotOutlet(element);
		processComponent(element);
		for(var i = 0; i < transforms.length; i++) {
			element = transforms[i](element, options) || element;
		}
		processAttrs(element);
		return element
	}

	function processKey(el) {
		var exp = getBindingAttr(el, 'key');
		if(exp) {
			{
				if(el.tag === 'template') {
					warn$2(
						"<template> cannot be keyed. Place the key on real elements instead.",
						getRawBindingAttr(el, 'key')
					);
				}
				if(el.for) {
					var iterator = el.iterator2 || el.iterator1;
					var parent = el.parent;
					if(iterator && iterator === exp && parent && parent.tag === 'transition-group') {
						warn$2(
							"Do not use v-for index as key on <transition-group> children, " +
							"this is the same as not using keys.",
							getRawBindingAttr(el, 'key'),
							true /* tip */
						);
					}
				}
			}
			el.key = exp;
		}
	}

	function processRef(el) {
		var ref = getBindingAttr(el, 'ref');
		if(ref) {
			el.ref = ref;
			el.refInFor = checkInFor(el);
		}
	}

	function processFor(el) {
		var exp;
		if((exp = getAndRemoveAttr(el, 'v-for'))) {
			var res = parseFor(exp);
			if(res) {
				extend(el, res);
			} else {
				warn$2(
					("Invalid v-for expression: " + exp),
					el.rawAttrsMap['v-for']
				);
			}
		}
	}

	function parseFor(exp) {
		var inMatch = exp.match(forAliasRE);
		if(!inMatch) {
			return
		}
		var res = {};
		res.for = inMatch[2].trim();
		var alias = inMatch[1].trim().replace(stripParensRE, '');
		var iteratorMatch = alias.match(forIteratorRE);
		if(iteratorMatch) {
			res.alias = alias.replace(forIteratorRE, '').trim();
			res.iterator1 = iteratorMatch[1].trim();
			if(iteratorMatch[2]) {
				res.iterator2 = iteratorMatch[2].trim();
			}
		} else {
			res.alias = alias;
		}
		return res
	}

	function processIf(el) {
		var exp = getAndRemoveAttr(el, 'v-if');
		if(exp) {
			el.if = exp;
			addIfCondition(el, {
				exp: exp,
				block: el
			});
		} else {
			if(getAndRemoveAttr(el, 'v-else') != null) {
				el.else = true;
			}
			var elseif = getAndRemoveAttr(el, 'v-else-if');
			if(elseif) {
				el.elseif = elseif;
			}
		}
	}

	function processIfConditions(el, parent) {
		var prev = findPrevElement(parent.children);
		if(prev && prev.if) {
			addIfCondition(prev, {
				exp: el.elseif,
				block: el
			});
		} else {
			warn$2(
				"v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
				"used on element <" + (el.tag) + "> without corresponding v-if.",
				el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
			);
		}
	}

	function findPrevElement(children) {
		var i = children.length;
		while(i--) {
			if(children[i].type === 1) {
				return children[i]
			} else {
				if(children[i].text !== ' ') {
					warn$2(
						"text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
						"will be ignored.",
						children[i]
					);
				}
				children.pop();
			}
		}
	}

	function addIfCondition(el, condition) {
		if(!el.ifConditions) {
			el.ifConditions = [];
		}
		el.ifConditions.push(condition);
	}

	function processOnce(el) {
		var once$$1 = getAndRemoveAttr(el, 'v-once');
		if(once$$1 != null) {
			el.once = true;
		}
	}

	// handle content being passed to a component as slot,
	// e.g. <template slot="xxx">, <div slot-scope="xxx">
	function processSlotContent(el) {
		var slotScope;
		if(el.tag === 'template') {
			slotScope = getAndRemoveAttr(el, 'scope');
			/* istanbul ignore if */
			if(slotScope) {
				warn$2(
					"the \"scope\" attribute for scoped slots have been deprecated and " +
					"replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
					"can also be used on plain elements in addition to <template> to " +
					"denote scoped slots.",
					el.rawAttrsMap['scope'],
					true
				);
			}
			el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
		} else if((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
			/* istanbul ignore if */
			if(el.attrsMap['v-for']) {
				warn$2(
					"Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
					"(v-for takes higher priority). Use a wrapper <template> for the " +
					"scoped slot to make it clearer.",
					el.rawAttrsMap['slot-scope'],
					true
				);
			}
			el.slotScope = slotScope;
		}

		// slot="xxx"
		var slotTarget = getBindingAttr(el, 'slot');
		if(slotTarget) {
			el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
			el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
			// preserve slot as an attribute for native shadow DOM compat
			// only for non-scoped slots.
			if(el.tag !== 'template' && !el.slotScope) {
				addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
			}
		}

		// 2.6 v-slot syntax
		{
			if(el.tag === 'template') {
				// v-slot on <template>
				var slotBinding = getAndRemoveAttrByRegex(el, slotRE);
				if(slotBinding) {
					{
						if(el.slotTarget || el.slotScope) {
							warn$2(
								"Unexpected mixed usage of different slot syntaxes.",
								el
							);
						}
						if(el.parent && !maybeComponent(el.parent)) {
							warn$2(
								"<template v-slot> can only appear at the root level inside " +
								"the receiving component",
								el
							);
						}
					}
					var ref = getSlotName(slotBinding);
					var name = ref.name;
					var dynamic = ref.dynamic;
					el.slotTarget = name;
					el.slotTargetDynamic = dynamic;
					el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
				}
			} else {
				// v-slot on component, denotes default slot
				var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE);
				if(slotBinding$1) {
					{
						if(!maybeComponent(el)) {
							warn$2(
								"v-slot can only be used on components or <template>.",
								slotBinding$1
							);
						}
						if(el.slotScope || el.slotTarget) {
							warn$2(
								"Unexpected mixed usage of different slot syntaxes.",
								el
							);
						}
						if(el.scopedSlots) {
							warn$2(
								"To avoid scope ambiguity, the default slot should also use " +
								"<template> syntax when there are other named slots.",
								slotBinding$1
							);
						}
					}
					// add the component's children to its default slot
					var slots = el.scopedSlots || (el.scopedSlots = {});
					var ref$1 = getSlotName(slotBinding$1);
					var name$1 = ref$1.name;
					var dynamic$1 = ref$1.dynamic;
					var slotContainer = slots[name$1] = createASTElement('template', [], el);
					slotContainer.slotTarget = name$1;
					slotContainer.slotTargetDynamic = dynamic$1;
					slotContainer.children = el.children.filter(function(c) {
						if(!c.slotScope) {
							c.parent = slotContainer;
							return true
						}
					});
					slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken;
					// remove children as they are returned from scopedSlots now
					el.children = [];
					// mark el non-plain so data gets generated
					el.plain = false;
				}
			}
		}
	}

	function getSlotName(binding) {
		var name = binding.name.replace(slotRE, '');
		if(!name) {
			if(binding.name[0] !== '#') {
				name = 'default';
			} else {
				warn$2(
					"v-slot shorthand syntax requires a slot name.",
					binding
				);
			}
		}
		return dynamicArgRE.test(name)
			// dynamic [name]
			?
			{
				name: name.slice(1, -1),
				dynamic: true
			}
			// static name
			:
			{
				name: ("\"" + name + "\""),
				dynamic: false
			}
	}

	// handle <slot/> outlets
	function processSlotOutlet(el) {
		if(el.tag === 'slot') {
			el.slotName = getBindingAttr(el, 'name');
			if(el.key) {
				warn$2(
					"`key` does not work on <slot> because slots are abstract outlets " +
					"and can possibly expand into multiple elements. " +
					"Use the key on a wrapping element instead.",
					getRawBindingAttr(el, 'key')
				);
			}
		}
	}

	function processComponent(el) {
		var binding;
		if((binding = getBindingAttr(el, 'is'))) {
			el.component = binding;
		}
		if(getAndRemoveAttr(el, 'inline-template') != null) {
			el.inlineTemplate = true;
		}
	}

	function processAttrs(el) {
		var list = el.attrsList;
		var i, l, name, rawName, value, modifiers, syncGen, isDynamic;
		for(i = 0, l = list.length; i < l; i++) {
			name = rawName = list[i].name;
			value = list[i].value;
			if(dirRE.test(name)) {
				// mark element as dynamic
				el.hasBindings = true;
				// modifiers
				modifiers = parseModifiers(name.replace(dirRE, ''));
				// support .foo shorthand syntax for the .prop modifier
				if(modifiers) {
					name = name.replace(modifierRE, '');
				}
				if(bindRE.test(name)) { // v-bind
					name = name.replace(bindRE, '');
					value = parseFilters(value);
					isDynamic = dynamicArgRE.test(name);
					if(isDynamic) {
						name = name.slice(1, -1);
					}
					if(
						value.trim().length === 0
					) {
						warn$2(
							("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
						);
					}
					if(modifiers) {
						if(modifiers.prop && !isDynamic) {
							name = camelize(name);
							if(name === 'innerHtml') {
								name = 'innerHTML';
							}
						}
						if(modifiers.camel && !isDynamic) {
							name = camelize(name);
						}
						if(modifiers.sync) {
							syncGen = genAssignmentCode(value, "$event");
							if(!isDynamic) {
								addHandler(
									el,
									("update:" + (camelize(name))),
									syncGen,
									null,
									false,
									warn$2,
									list[i]
								);
								if(hyphenate(name) !== camelize(name)) {
									addHandler(
										el,
										("update:" + (hyphenate(name))),
										syncGen,
										null,
										false,
										warn$2,
										list[i]
									);
								}
							} else {
								// handler w/ dynamic event name
								addHandler(
									el,
									("\"update:\"+(" + name + ")"),
									syncGen,
									null,
									false,
									warn$2,
									list[i],
									true // dynamic
								);
							}
						}
					}
					if((modifiers && modifiers.prop) || (!el.component && platformMustUseProp(el.tag, el.attrsMap.type, name))) {
						addProp(el, name, value, list[i], isDynamic);
					} else {
						addAttr(el, name, value, list[i], isDynamic);
					}
				} else if(onRE.test(name)) { // v-on
					name = name.replace(onRE, '');
					isDynamic = dynamicArgRE.test(name);
					if(isDynamic) {
						name = name.slice(1, -1);
					}
					addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
				} else { // normal directives
					name = name.replace(dirRE, '');
					// parse arg
					var argMatch = name.match(argRE);
					var arg = argMatch && argMatch[1];
					isDynamic = false;
					if(arg) {
						name = name.slice(0, -(arg.length + 1));
						if(dynamicArgRE.test(arg)) {
							arg = arg.slice(1, -1);
							isDynamic = true;
						}
					}
					addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
					if(name === 'model') {
						checkForAliasModel(el, value);
					}
				}
			} else {
				// literal attribute
				{
					var res = parseText(value, delimiters);
					if(res) {
						warn$2(
							name + "=\"" + value + "\": " +
							'Interpolation inside attributes has been removed. ' +
							'Use v-bind or the colon shorthand instead. For example, ' +
							'instead of <div id="{{ val }}">, use <div :id="val">.',
							list[i]
						);
					}
				}
				addAttr(el, name, JSON.stringify(value), list[i]);
				// #6887 firefox doesn't update muted state if set via attribute
				// even immediately after element creation
				if(!el.component &&
					name === 'muted' &&
					platformMustUseProp(el.tag, el.attrsMap.type, name)) {
					addProp(el, name, 'true', list[i]);
				}
			}
		}
	}

	function checkInFor(el) {
		var parent = el;
		while(parent) {
			if(parent.for !== undefined) {
				return true
			}
			parent = parent.parent;
		}
		return false
	}

	function parseModifiers(name) {
		var match = name.match(modifierRE);
		if(match) {
			var ret = {};
			match.forEach(function(m) {
				ret[m.slice(1)] = true;
			});
			return ret
		}
	}

	function makeAttrsMap(attrs) {
		var map = {};
		for(var i = 0, l = attrs.length; i < l; i++) {
			if(
				map[attrs[i].name] && !isIE && !isEdge
			) {
				warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
			}
			map[attrs[i].name] = attrs[i].value;
		}
		return map
	}

	// for script (e.g. type="x/template") or style, do not decode content
	function isTextTag(el) {
		return el.tag === 'script' || el.tag === 'style'
	}

	function isForbiddenTag(el) {
		return(
			el.tag === 'style' ||
			(el.tag === 'script' && (!el.attrsMap.type ||
				el.attrsMap.type === 'text/javascript'
			))
		)
	}

	var ieNSBug = /^xmlns:NS\d+/;
	var ieNSPrefix = /^NS\d+:/;

	/* istanbul ignore next */
	function guardIESVGBug(attrs) {
		var res = [];
		for(var i = 0; i < attrs.length; i++) {
			var attr = attrs[i];
			if(!ieNSBug.test(attr.name)) {
				attr.name = attr.name.replace(ieNSPrefix, '');
				res.push(attr);
			}
		}
		return res
	}

	function checkForAliasModel(el, value) {
		var _el = el;
		while(_el) {
			if(_el.for && _el.alias === value) {
				warn$2(
					"<" + (el.tag) + " v-model=\"" + value + "\">: " +
					"You are binding v-model directly to a v-for iteration alias. " +
					"This will not be able to modify the v-for source array because " +
					"writing to the alias is like modifying a function local variable. " +
					"Consider using an array of objects and use v-model on an object property instead.",
					el.rawAttrsMap['v-model']
				);
			}
			_el = _el.parent;
		}
	}

	/*  */

	function preTransformNode(el, options) {
		if(el.tag === 'input') {
			var map = el.attrsMap;
			if(!map['v-model']) {
				return
			}

			var typeBinding;
			if(map[':type'] || map['v-bind:type']) {
				typeBinding = getBindingAttr(el, 'type');
			}
			if(!map.type && !typeBinding && map['v-bind']) {
				typeBinding = "(" + (map['v-bind']) + ").type";
			}

			if(typeBinding) {
				var ifCondition = getAndRemoveAttr(el, 'v-if', true);
				var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
				var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
				var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
				// 1. checkbox
				var branch0 = cloneASTElement(el);
				// process for on the main node
				processFor(branch0);
				addRawAttr(branch0, 'type', 'checkbox');
				processElement(branch0, options);
				branch0.processed = true; // prevent it from double-processed
				branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
				addIfCondition(branch0, {
					exp: branch0.if,
					block: branch0
				});
				// 2. add radio else-if condition
				var branch1 = cloneASTElement(el);
				getAndRemoveAttr(branch1, 'v-for', true);
				addRawAttr(branch1, 'type', 'radio');
				processElement(branch1, options);
				addIfCondition(branch0, {
					exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
					block: branch1
				});
				// 3. other
				var branch2 = cloneASTElement(el);
				getAndRemoveAttr(branch2, 'v-for', true);
				addRawAttr(branch2, ':type', typeBinding);
				processElement(branch2, options);
				addIfCondition(branch0, {
					exp: ifCondition,
					block: branch2
				});

				if(hasElse) {
					branch0.else = true;
				} else if(elseIfCondition) {
					branch0.elseif = elseIfCondition;
				}

				return branch0
			}
		}
	}

	function cloneASTElement(el) {
		return createASTElement(el.tag, el.attrsList.slice(), el.parent)
	}

	var model$1 = {
		preTransformNode: preTransformNode
	};

	var modules$1 = [
		klass$1,
		style$1,
		model$1
	];

	/*  */

	function text(el, dir) {
		if(dir.value) {
			addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir);
		}
	}

	/*  */

	function html(el, dir) {
		if(dir.value) {
			addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir);
		}
	}

	var directives$1 = {
		model: model,
		text: text,
		html: html
	};

	/*  */

	var baseOptions = {
		expectHTML: true,
		modules: modules$1,
		directives: directives$1,
		isPreTag: isPreTag,
		isUnaryTag: isUnaryTag,
		mustUseProp: mustUseProp,
		canBeLeftOpenTag: canBeLeftOpenTag,
		isReservedTag: isReservedTag,
		getTagNamespace: getTagNamespace,
		staticKeys: genStaticKeys(modules$1)
	};

	/*  */

	var isStaticKey;
	var isPlatformReservedTag;

	var genStaticKeysCached = cached(genStaticKeys$1);

	/**
	 * Goal of the optimizer: walk the generated template AST tree
	 * and detect sub-trees that are purely static, i.e. parts of
	 * the DOM that never needs to change.
	 *
	 * Once we detect these sub-trees, we can:
	 *
	 * 1. Hoist them into constants, so that we no longer need to
	 *    create fresh nodes for them on each re-render;
	 * 2. Completely skip them in the patching process.
	 */
	function optimize(root, options) {
		if(!root) {
			return
		}
		isStaticKey = genStaticKeysCached(options.staticKeys || '');
		isPlatformReservedTag = options.isReservedTag || no;
		// first pass: mark all non-static nodes.
		markStatic$1(root);
		// second pass: mark static roots.
		markStaticRoots(root, false);
	}

	function genStaticKeys$1(keys) {
		return makeMap(
			'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
			(keys ? ',' + keys : '')
		)
	}

	function markStatic$1(node) {
		node.static = isStatic(node);
		if(node.type === 1) {
			// do not make component slot content static. this avoids
			// 1. components not able to mutate slot nodes
			// 2. static slot content fails for hot-reloading
			if(!isPlatformReservedTag(node.tag) &&
				node.tag !== 'slot' &&
				node.attrsMap['inline-template'] == null
			) {
				return
			}
			for(var i = 0, l = node.children.length; i < l; i++) {
				var child = node.children[i];
				markStatic$1(child);
				if(!child.static) {
					node.static = false;
				}
			}
			if(node.ifConditions) {
				for(var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
					var block = node.ifConditions[i$1].block;
					markStatic$1(block);
					if(!block.static) {
						node.static = false;
					}
				}
			}
		}
	}

	function markStaticRoots(node, isInFor) {
		if(node.type === 1) {
			if(node.static || node.once) {
				node.staticInFor = isInFor;
			}
			// For a node to qualify as a static root, it should have children that
			// are not just static text. Otherwise the cost of hoisting out will
			// outweigh the benefits and it's better off to just always render it fresh.
			if(node.static && node.children.length && !(
					node.children.length === 1 &&
					node.children[0].type === 3
				)) {
				node.staticRoot = true;
				return
			} else {
				node.staticRoot = false;
			}
			if(node.children) {
				for(var i = 0, l = node.children.length; i < l; i++) {
					markStaticRoots(node.children[i], isInFor || !!node.for);
				}
			}
			if(node.ifConditions) {
				for(var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
					markStaticRoots(node.ifConditions[i$1].block, isInFor);
				}
			}
		}
	}

	function isStatic(node) {
		if(node.type === 2) { // expression
			return false
		}
		if(node.type === 3) { // text
			return true
		}
		return !!(node.pre || (!node.hasBindings && // no dynamic bindings
			!node.if && !node.for && // not v-if or v-for or v-else
			!isBuiltInTag(node.tag) && // not a built-in
			isPlatformReservedTag(node.tag) && // not a component
			!isDirectChildOfTemplateFor(node) &&
			Object.keys(node).every(isStaticKey)
		))
	}

	function isDirectChildOfTemplateFor(node) {
		while(node.parent) {
			node = node.parent;
			if(node.tag !== 'template') {
				return false
			}
			if(node.for) {
				return true
			}
		}
		return false
	}

	/*  */

	var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/;
	var fnInvokeRE = /\([^)]*?\);*$/;
	var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;

	// KeyboardEvent.keyCode aliases
	var keyCodes = {
		esc: 27,
		tab: 9,
		enter: 13,
		space: 32,
		up: 38,
		left: 37,
		right: 39,
		down: 40,
		'delete': [8, 46]
	};

	// KeyboardEvent.key aliases
	var keyNames = {
		// #7880: IE11 and Edge use `Esc` for Escape key name.
		esc: ['Esc', 'Escape'],
		tab: 'Tab',
		enter: 'Enter',
		// #9112: IE11 uses `Spacebar` for Space key name.
		space: [' ', 'Spacebar'],
		// #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
		up: ['Up', 'ArrowUp'],
		left: ['Left', 'ArrowLeft'],
		right: ['Right', 'ArrowRight'],
		down: ['Down', 'ArrowDown'],
		// #9112: IE11 uses `Del` for Delete key name.
		'delete': ['Backspace', 'Delete', 'Del']
	};

	// #4868: modifiers that prevent the execution of the listener
	// need to explicitly return null so that we can determine whether to remove
	// the listener for .once
	var genGuard = function(condition) {
		return("if(" + condition + ")return null;");
	};

	var modifierCode = {
		stop: '$event.stopPropagation();',
		prevent: '$event.preventDefault();',
		self: genGuard("$event.target !== $event.currentTarget"),
		ctrl: genGuard("!$event.ctrlKey"),
		shift: genGuard("!$event.shiftKey"),
		alt: genGuard("!$event.altKey"),
		meta: genGuard("!$event.metaKey"),
		left: genGuard("'button' in $event && $event.button !== 0"),
		middle: genGuard("'button' in $event && $event.button !== 1"),
		right: genGuard("'button' in $event && $event.button !== 2")
	};

	function genHandlers(
		events,
		isNative
	) {
		var prefix = isNative ? 'nativeOn:' : 'on:';
		var staticHandlers = "";
		var dynamicHandlers = "";
		for(var name in events) {
			var handlerCode = genHandler(events[name]);
			if(events[name] && events[name].dynamic) {
				dynamicHandlers += name + "," + handlerCode + ",";
			} else {
				staticHandlers += "\"" + name + "\":" + handlerCode + ",";
			}
		}
		staticHandlers = "{" + (staticHandlers.slice(0, -1)) + "}";
		if(dynamicHandlers) {
			return prefix + "_d(" + staticHandlers + ",[" + (dynamicHandlers.slice(0, -1)) + "])"
		} else {
			return prefix + staticHandlers
		}
	}

	function genHandler(handler) {
		if(!handler) {
			return 'function(){}'
		}

		if(Array.isArray(handler)) {
			return("[" + (handler.map(function(handler) {
				return genHandler(handler);
			}).join(',')) + "]")
		}

		var isMethodPath = simplePathRE.test(handler.value);
		var isFunctionExpression = fnExpRE.test(handler.value);
		var isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, ''));

		if(!handler.modifiers) {
			if(isMethodPath || isFunctionExpression) {
				return handler.value
			}
			return("function($event){" + (isFunctionInvocation ? ("return " + (handler.value)) : handler.value) + "}") // inline statement
		} else {
			var code = '';
			var genModifierCode = '';
			var keys = [];
			for(var key in handler.modifiers) {
				if(modifierCode[key]) {
					genModifierCode += modifierCode[key];
					// left/right
					if(keyCodes[key]) {
						keys.push(key);
					}
				} else if(key === 'exact') {
					var modifiers = (handler.modifiers);
					genModifierCode += genGuard(
						['ctrl', 'shift', 'alt', 'meta']
						.filter(function(keyModifier) {
							return !modifiers[keyModifier];
						})
						.map(function(keyModifier) {
							return("$event." + keyModifier + "Key");
						})
						.join('||')
					);
				} else {
					keys.push(key);
				}
			}
			if(keys.length) {
				code += genKeyFilter(keys);
			}
			// Make sure modifiers like prevent and stop get executed after key filtering
			if(genModifierCode) {
				code += genModifierCode;
			}
			var handlerCode = isMethodPath ?
				("return " + (handler.value) + "($event)") :
				isFunctionExpression ?
				("return (" + (handler.value) + ")($event)") :
				isFunctionInvocation ?
				("return " + (handler.value)) :
				handler.value;
			return("function($event){" + code + handlerCode + "}")
		}
	}

	function genKeyFilter(keys) {
		return(
			// make sure the key filters only apply to KeyboardEvents
			// #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
			// key events that do not have keyCode property...
			"if(!$event.type.indexOf('key')&&" +
			(keys.map(genFilterCode).join('&&')) + ")return null;"
		)
	}

	function genFilterCode(key) {
		var keyVal = parseInt(key, 10);
		if(keyVal) {
			return("$event.keyCode!==" + keyVal)
		}
		var keyCode = keyCodes[key];
		var keyName = keyNames[key];
		return(
			"_k($event.keyCode," +
			(JSON.stringify(key)) + "," +
			(JSON.stringify(keyCode)) + "," +
			"$event.key," +
			"" + (JSON.stringify(keyName)) +
			")"
		)
	}

	/*  */

	function on(el, dir) {
		if(dir.modifiers) {
			warn("v-on without argument does not support modifiers.");
		}
		el.wrapListeners = function(code) {
			return("_g(" + code + "," + (dir.value) + ")");
		};
	}

	/*  */

	function bind$1(el, dir) {
		el.wrapData = function(code) {
			return("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
		};
	}

	/*  */

	var baseDirectives = {
		on: on,
		bind: bind$1,
		cloak: noop
	};

	/*  */

	var CodegenState = function CodegenState(options) {
		this.options = options;
		this.warn = options.warn || baseWarn;
		this.transforms = pluckModuleFunction(options.modules, 'transformCode');
		this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
		this.directives = extend(extend({}, baseDirectives), options.directives);
		var isReservedTag = options.isReservedTag || no;
		this.maybeComponent = function(el) {
			return !!el.component || !isReservedTag(el.tag);
		};
		this.onceId = 0;
		this.staticRenderFns = [];
		this.pre = false;
	};

	function generate(
		ast,
		options
	) {
		var state = new CodegenState(options);
		var code = ast ? genElement(ast, state) : '_c("div")';
		return {
			render: ("with(this){return " + code + "}"),
			staticRenderFns: state.staticRenderFns
		}
	}

	function genElement(el, state) {
		if(el.parent) {
			el.pre = el.pre || el.parent.pre;
		}

		if(el.staticRoot && !el.staticProcessed) {
			return genStatic(el, state)
		} else if(el.once && !el.onceProcessed) {
			return genOnce(el, state)
		} else if(el.for && !el.forProcessed) {
			return genFor(el, state)
		} else if(el.if && !el.ifProcessed) {
			return genIf(el, state)
		} else if(el.tag === 'template' && !el.slotTarget && !state.pre) {
			return genChildren(el, state) || 'void 0'
		} else if(el.tag === 'slot') {
			return genSlot(el, state)
		} else {
			// component or element
			var code;
			if(el.component) {
				code = genComponent(el.component, el, state);
			} else {
				var data;
				if(!el.plain || (el.pre && state.maybeComponent(el))) {
					data = genData$2(el, state);
				}

				var children = el.inlineTemplate ? null : genChildren(el, state, true);
				code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
			}
			// module transforms
			for(var i = 0; i < state.transforms.length; i++) {
				code = state.transforms[i](el, code);
			}
			return code
		}
	}

	// hoist static sub-trees out
	function genStatic(el, state) {
		el.staticProcessed = true;
		// Some elements (templates) need to behave differently inside of a v-pre
		// node.  All pre nodes are static roots, so we can use this as a location to
		// wrap a state change and reset it upon exiting the pre node.
		var originalPreState = state.pre;
		if(el.pre) {
			state.pre = el.pre;
		}
		state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
		state.pre = originalPreState;
		return("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
	}

	// v-once
	function genOnce(el, state) {
		el.onceProcessed = true;
		if(el.if && !el.ifProcessed) {
			return genIf(el, state)
		} else if(el.staticInFor) {
			var key = '';
			var parent = el.parent;
			while(parent) {
				if(parent.for) {
					key = parent.key;
					break
				}
				parent = parent.parent;
			}
			if(!key) {
				state.warn(
					"v-once can only be used inside v-for that is keyed. ",
					el.rawAttrsMap['v-once']
				);
				return genElement(el, state)
			}
			return("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
		} else {
			return genStatic(el, state)
		}
	}

	function genIf(
		el,
		state,
		altGen,
		altEmpty
	) {
		el.ifProcessed = true; // avoid recursion
		return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
	}

	function genIfConditions(
		conditions,
		state,
		altGen,
		altEmpty
	) {
		if(!conditions.length) {
			return altEmpty || '_e()'
		}

		var condition = conditions.shift();
		if(condition.exp) {
			return("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
		} else {
			return("" + (genTernaryExp(condition.block)))
		}

		// v-if with v-once should generate code like (a)?_m(0):_m(1)
		function genTernaryExp(el) {
			return altGen ?
				altGen(el, state) :
				el.once ?
				genOnce(el, state) :
				genElement(el, state)
		}
	}

	function genFor(
		el,
		state,
		altGen,
		altHelper
	) {
		var exp = el.for;
		var alias = el.alias;
		var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
		var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';

		if(state.maybeComponent(el) &&
			el.tag !== 'slot' &&
			el.tag !== 'template' &&
			!el.key
		) {
			state.warn(
				"<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
				"v-for should have explicit keys. " +
				"See https://vuejs.org/guide/list.html#key for more info.",
				el.rawAttrsMap['v-for'],
				true /* tip */
			);
		}

		el.forProcessed = true; // avoid recursion
		return(altHelper || '_l') + "((" + exp + ")," +
			"function(" + alias + iterator1 + iterator2 + "){" +
			"return " + ((altGen || genElement)(el, state)) +
			'})'
	}

	function genData$2(el, state) {
		var data = '{';

		// directives first.
		// directives may mutate the el's other properties before they are generated.
		var dirs = genDirectives(el, state);
		if(dirs) {
			data += dirs + ',';
		}

		// key
		if(el.key) {
			data += "key:" + (el.key) + ",";
		}
		// ref
		if(el.ref) {
			data += "ref:" + (el.ref) + ",";
		}
		if(el.refInFor) {
			data += "refInFor:true,";
		}
		// pre
		if(el.pre) {
			data += "pre:true,";
		}
		// record original tag name for components using "is" attribute
		if(el.component) {
			data += "tag:\"" + (el.tag) + "\",";
		}
		// module data generation functions
		for(var i = 0; i < state.dataGenFns.length; i++) {
			data += state.dataGenFns[i](el);
		}
		// attributes
		if(el.attrs) {
			data += "attrs:" + (genProps(el.attrs)) + ",";
		}
		// DOM props
		if(el.props) {
			data += "domProps:" + (genProps(el.props)) + ",";
		}
		// event handlers
		if(el.events) {
			data += (genHandlers(el.events, false)) + ",";
		}
		if(el.nativeEvents) {
			data += (genHandlers(el.nativeEvents, true)) + ",";
		}
		// slot target
		// only for non-scoped slots
		if(el.slotTarget && !el.slotScope) {
			data += "slot:" + (el.slotTarget) + ",";
		}
		// scoped slots
		if(el.scopedSlots) {
			data += (genScopedSlots(el, el.scopedSlots, state)) + ",";
		}
		// component v-model
		if(el.model) {
			data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
		}
		// inline-template
		if(el.inlineTemplate) {
			var inlineTemplate = genInlineTemplate(el, state);
			if(inlineTemplate) {
				data += inlineTemplate + ",";
			}
		}
		data = data.replace(/,$/, '') + '}';
		// v-bind dynamic argument wrap
		// v-bind with dynamic arguments must be applied using the same v-bind object
		// merge helper so that class/style/mustUseProp attrs are handled correctly.
		if(el.dynamicAttrs) {
			data = "_b(" + data + ",\"" + (el.tag) + "\"," + (genProps(el.dynamicAttrs)) + ")";
		}
		// v-bind data wrap
		if(el.wrapData) {
			data = el.wrapData(data);
		}
		// v-on data wrap
		if(el.wrapListeners) {
			data = el.wrapListeners(data);
		}
		return data
	}

	function genDirectives(el, state) {
		var dirs = el.directives;
		if(!dirs) {
			return
		}
		var res = 'directives:[';
		var hasRuntime = false;
		var i, l, dir, needRuntime;
		for(i = 0, l = dirs.length; i < l; i++) {
			dir = dirs[i];
			needRuntime = true;
			var gen = state.directives[dir.name];
			if(gen) {
				// compile-time directive that manipulates AST.
				// returns true if it also needs a runtime counterpart.
				needRuntime = !!gen(el, dir, state.warn);
			}
			if(needRuntime) {
				hasRuntime = true;
				res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:" + (dir.isDynamicArg ? dir.arg : ("\"" + (dir.arg) + "\""))) : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
			}
		}
		if(hasRuntime) {
			return res.slice(0, -1) + ']'
		}
	}

	function genInlineTemplate(el, state) {
		var ast = el.children[0];
		if(el.children.length !== 1 || ast.type !== 1) {
			state.warn(
				'Inline-template components must have exactly one child element.', {
					start: el.start
				}
			);
		}
		if(ast && ast.type === 1) {
			var inlineRenderFns = generate(ast, state.options);
			return("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function(code) {
				return("function(){" + code + "}");
			}).join(',')) + "]}")
		}
	}

	function genScopedSlots(
		el,
		slots,
		state
	) {
		// by default scoped slots are considered "stable", this allows child
		// components with only scoped slots to skip forced updates from parent.
		// but in some cases we have to bail-out of this optimization
		// for example if the slot contains dynamic names, has v-if or v-for on them...
		var needsForceUpdate = el.for || Object.keys(slots).some(function(key) {
			var slot = slots[key];
			return(
				slot.slotTargetDynamic ||
				slot.if ||
				slot.for ||
				containsSlotChild(slot) // is passing down slot from parent which may be dynamic
			)
		});

		// #9534: if a component with scoped slots is inside a conditional branch,
		// it's possible for the same component to be reused but with different
		// compiled slot content. To avoid that, we generate a unique key based on
		// the generated code of all the slot contents.
		var needsKey = !!el.if;

		// OR when it is inside another scoped slot or v-for (the reactivity may be
		// disconnected due to the intermediate scope variable)
		// #9438, #9506
		// TODO: this can be further optimized by properly analyzing in-scope bindings
		// and skip force updating ones that do not actually use scope variables.
		if(!needsForceUpdate) {
			var parent = el.parent;
			while(parent) {
				if(
					(parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
					parent.for
				) {
					needsForceUpdate = true;
					break
				}
				if(parent.if) {
					needsKey = true;
				}
				parent = parent.parent;
			}
		}

		var generatedSlots = Object.keys(slots)
			.map(function(key) {
				return genScopedSlot(slots[key], state);
			})
			.join(',');

		return("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")")
	}

	function hash(str) {
		var hash = 5381;
		var i = str.length;
		while(i) {
			hash = (hash * 33) ^ str.charCodeAt(--i);
		}
		return hash >>> 0
	}

	function containsSlotChild(el) {
		if(el.type === 1) {
			if(el.tag === 'slot') {
				return true
			}
			return el.children.some(containsSlotChild)
		}
		return false
	}

	function genScopedSlot(
		el,
		state
	) {
		var isLegacySyntax = el.attrsMap['slot-scope'];
		if(el.if && !el.ifProcessed && !isLegacySyntax) {
			return genIf(el, state, genScopedSlot, "null")
		}
		if(el.for && !el.forProcessed) {
			return genFor(el, state, genScopedSlot)
		}
		var slotScope = el.slotScope === emptySlotScopeToken ?
			"" :
			String(el.slotScope);
		var fn = "function(" + slotScope + "){" +
			"return " + (el.tag === 'template' ?
				el.if && isLegacySyntax ?
				("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined") :
				genChildren(el, state) || 'undefined' :
				genElement(el, state)) + "}";
		// reverse proxy v-slot without scope on this.$slots
		var reverseProxy = slotScope ? "" : ",proxy:true";
		return("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}")
	}

	function genChildren(
		el,
		state,
		checkSkip,
		altGenElement,
		altGenNode
	) {
		var children = el.children;
		if(children.length) {
			var el$1 = children[0];
			// optimize single v-for
			if(children.length === 1 &&
				el$1.for &&
				el$1.tag !== 'template' &&
				el$1.tag !== 'slot'
			) {
				var normalizationType = checkSkip ?
					state.maybeComponent(el$1) ? ",1" : ",0" :
					"";
				return("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
			}
			var normalizationType$1 = checkSkip ?
				getNormalizationType(children, state.maybeComponent) :
				0;
			var gen = altGenNode || genNode;
			return("[" + (children.map(function(c) {
				return gen(c, state);
			}).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
		}
	}

	// determine the normalization needed for the children array.
	// 0: no normalization needed
	// 1: simple normalization needed (possible 1-level deep nested array)
	// 2: full normalization needed
	function getNormalizationType(
		children,
		maybeComponent
	) {
		var res = 0;
		for(var i = 0; i < children.length; i++) {
			var el = children[i];
			if(el.type !== 1) {
				continue
			}
			if(needsNormalization(el) ||
				(el.ifConditions && el.ifConditions.some(function(c) {
					return needsNormalization(c.block);
				}))) {
				res = 2;
				break
			}
			if(maybeComponent(el) ||
				(el.ifConditions && el.ifConditions.some(function(c) {
					return maybeComponent(c.block);
				}))) {
				res = 1;
			}
		}
		return res
	}

	function needsNormalization(el) {
		return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
	}

	function genNode(node, state) {
		if(node.type === 1) {
			return genElement(node, state)
		} else if(node.type === 3 && node.isComment) {
			return genComment(node)
		} else {
			return genText(node)
		}
	}

	function genText(text) {
		return("_v(" + (text.type === 2 ?
			text.expression // no need for () because already wrapped in _s()
			:
			transformSpecialNewlines(JSON.stringify(text.text))) + ")")
	}

	function genComment(comment) {
		return("_e(" + (JSON.stringify(comment.text)) + ")")
	}

	function genSlot(el, state) {
		var slotName = el.slotName || '"default"';
		var children = genChildren(el, state);
		var res = "_t(" + slotName + (children ? ("," + children) : '');
		var attrs = el.attrs || el.dynamicAttrs ?
			genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function(attr) {
				return({
					// slot props are camelized
					name: camelize(attr.name),
					value: attr.value,
					dynamic: attr.dynamic
				});
			})) :
			null;
		var bind$$1 = el.attrsMap['v-bind'];
		if((attrs || bind$$1) && !children) {
			res += ",null";
		}
		if(attrs) {
			res += "," + attrs;
		}
		if(bind$$1) {
			res += (attrs ? '' : ',null') + "," + bind$$1;
		}
		return res + ')'
	}

	// componentName is el.component, take it as argument to shun flow's pessimistic refinement
	function genComponent(
		componentName,
		el,
		state
	) {
		var children = el.inlineTemplate ? null : genChildren(el, state, true);
		return("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
	}

	function genProps(props) {
		var staticProps = "";
		var dynamicProps = "";
		for(var i = 0; i < props.length; i++) {
			var prop = props[i];
			var value = transformSpecialNewlines(prop.value);
			if(prop.dynamic) {
				dynamicProps += (prop.name) + "," + value + ",";
			} else {
				staticProps += "\"" + (prop.name) + "\":" + value + ",";
			}
		}
		staticProps = "{" + (staticProps.slice(0, -1)) + "}";
		if(dynamicProps) {
			return("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])")
		} else {
			return staticProps
		}
	}

	// #3895, #4268
	function transformSpecialNewlines(text) {
		return text
			.replace(/\u2028/g, '\\u2028')
			.replace(/\u2029/g, '\\u2029')
	}

	/*  */

	// these keywords should not appear inside expressions, but operators like
	// typeof, instanceof and in are allowed
	var prohibitedKeywordRE = new RegExp('\\b' + (
		'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
		'super,throw,while,yield,delete,export,import,return,switch,default,' +
		'extends,finally,continue,debugger,function,arguments'
	).split(',').join('\\b|\\b') + '\\b');

	// these unary operators should not be used as property/method names
	var unaryOperatorsRE = new RegExp('\\b' + (
		'delete,typeof,void'
	).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');

	// strip strings in expressions
	var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;

	// detect problematic expressions in a template
	function detectErrors(ast, warn) {
		if(ast) {
			checkNode(ast, warn);
		}
	}

	function checkNode(node, warn) {
		if(node.type === 1) {
			for(var name in node.attrsMap) {
				if(dirRE.test(name)) {
					var value = node.attrsMap[name];
					if(value) {
						var range = node.rawAttrsMap[name];
						if(name === 'v-for') {
							checkFor(node, ("v-for=\"" + value + "\""), warn, range);
						} else if(name === 'v-slot' || name[0] === '#') {
							checkFunctionParameterExpression(value, (name + "=\"" + value + "\""), warn, range);
						} else if(onRE.test(name)) {
							checkEvent(value, (name + "=\"" + value + "\""), warn, range);
						} else {
							checkExpression(value, (name + "=\"" + value + "\""), warn, range);
						}
					}
				}
			}
			if(node.children) {
				for(var i = 0; i < node.children.length; i++) {
					checkNode(node.children[i], warn);
				}
			}
		} else if(node.type === 2) {
			checkExpression(node.expression, node.text, warn, node);
		}
	}

	function checkEvent(exp, text, warn, range) {
		var stripped = exp.replace(stripStringRE, '');
		var keywordMatch = stripped.match(unaryOperatorsRE);
		if(keywordMatch && stripped.charAt(keywordMatch.index - 1) !== '$') {
			warn(
				"avoid using JavaScript unary operator as property name: " +
				"\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()),
				range
			);
		}
		checkExpression(exp, text, warn, range);
	}

	function checkFor(node, text, warn, range) {
		checkExpression(node.for || '', text, warn, range);
		checkIdentifier(node.alias, 'v-for alias', text, warn, range);
		checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
		checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
	}

	function checkIdentifier(
		ident,
		type,
		text,
		warn,
		range
	) {
		if(typeof ident === 'string') {
			try {
				new Function(("var " + ident + "=_"));
			} catch(e) {
				warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range);
			}
		}
	}

	function checkExpression(exp, text, warn, range) {
		try {
			new Function(("return " + exp));
		} catch(e) {
			var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
			if(keywordMatch) {
				warn(
					"avoid using JavaScript keyword as property name: " +
					"\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim()),
					range
				);
			} else {
				warn(
					"invalid expression: " + (e.message) + " in\n\n" +
					"    " + exp + "\n\n" +
					"  Raw expression: " + (text.trim()) + "\n",
					range
				);
			}
		}
	}

	function checkFunctionParameterExpression(exp, text, warn, range) {
		try {
			new Function(exp, '');
		} catch(e) {
			warn(
				"invalid function parameter expression: " + (e.message) + " in\n\n" +
				"    " + exp + "\n\n" +
				"  Raw expression: " + (text.trim()) + "\n",
				range
			);
		}
	}

	/*  */

	var range = 2;

	function generateCodeFrame(
		source,
		start,
		end
	) {
		if(start === void 0) start = 0;
		if(end === void 0) end = source.length;

		var lines = source.split(/\r?\n/);
		var count = 0;
		var res = [];
		for(var i = 0; i < lines.length; i++) {
			count += lines[i].length + 1;
			if(count >= start) {
				for(var j = i - range; j <= i + range || end > count; j++) {
					if(j < 0 || j >= lines.length) {
						continue
					}
					res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "|  " + (lines[j])));
					var lineLength = lines[j].length;
					if(j === i) {
						// push underline
						var pad = start - (count - lineLength) + 1;
						var length = end > count ? lineLength - pad : end - start;
						res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length));
					} else if(j > i) {
						if(end > count) {
							var length$1 = Math.min(end - count, lineLength);
							res.push("   |  " + repeat$1("^", length$1));
						}
						count += lineLength + 1;
					}
				}
				break
			}
		}
		return res.join('\n')
	}

	function repeat$1(str, n) {
		var result = '';
		if(n > 0) {
			while(true) { // eslint-disable-line
				if(n & 1) {
					result += str;
				}
				n >>>= 1;
				if(n <= 0) {
					break
				}
				str += str;
			}
		}
		return result
	}

	/*  */

	function createFunction(code, errors) {
		try {
			return new Function(code)
		} catch(err) {
			errors.push({
				err: err,
				code: code
			});
			return noop
		}
	}

	function createCompileToFunctionFn(compile) {
		var cache = Object.create(null);

		return function compileToFunctions(
			template,
			options,
			vm
		) {
			options = extend({}, options);
			var warn$$1 = options.warn || warn;
			delete options.warn;

			/* istanbul ignore if */
			{
				// detect possible CSP restriction
				try {
					new Function('return 1');
				} catch(e) {
					if(e.toString().match(/unsafe-eval|CSP/)) {
						warn$$1(
							'It seems you are using the standalone build of Vue.js in an ' +
							'environment with Content Security Policy that prohibits unsafe-eval. ' +
							'The template compiler cannot work in this environment. Consider ' +
							'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
							'templates into render functions.'
						);
					}
				}
			}

			// check cache
			var key = options.delimiters ?
				String(options.delimiters) + template :
				template;
			if(cache[key]) {
				return cache[key]
			}

			// compile
			var compiled = compile(template, options);

			// check compilation errors/tips
			{
				if(compiled.errors && compiled.errors.length) {
					if(options.outputSourceRange) {
						compiled.errors.forEach(function(e) {
							warn$$1(
								"Error compiling template:\n\n" + (e.msg) + "\n\n" +
								generateCodeFrame(template, e.start, e.end),
								vm
							);
						});
					} else {
						warn$$1(
							"Error compiling template:\n\n" + template + "\n\n" +
							compiled.errors.map(function(e) {
								return("- " + e);
							}).join('\n') + '\n',
							vm
						);
					}
				}
				if(compiled.tips && compiled.tips.length) {
					if(options.outputSourceRange) {
						compiled.tips.forEach(function(e) {
							return tip(e.msg, vm);
						});
					} else {
						compiled.tips.forEach(function(msg) {
							return tip(msg, vm);
						});
					}
				}
			}

			// turn code into functions
			var res = {};
			var fnGenErrors = [];
			res.render = createFunction(compiled.render, fnGenErrors);
			res.staticRenderFns = compiled.staticRenderFns.map(function(code) {
				return createFunction(code, fnGenErrors)
			});

			// check function generation errors.
			// this should only happen if there is a bug in the compiler itself.
			// mostly for codegen development use
			/* istanbul ignore if */
			{
				if((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
					warn$$1(
						"Failed to generate render function:\n\n" +
						fnGenErrors.map(function(ref) {
							var err = ref.err;
							var code = ref.code;

							return((err.toString()) + " in\n\n" + code + "\n");
						}).join('\n'),
						vm
					);
				}
			}

			return(cache[key] = res)
		}
	}

	/*  */

	function createCompilerCreator(baseCompile) {
		return function createCompiler(baseOptions) {
			function compile(
				template,
				options
			) {
				var finalOptions = Object.create(baseOptions);
				var errors = [];
				var tips = [];

				var warn = function(msg, range, tip) {
					(tip ? tips : errors).push(msg);
				};

				if(options) {
					if(options.outputSourceRange) {
						// $flow-disable-line
						var leadingSpaceLength = template.match(/^\s*/)[0].length;

						warn = function(msg, range, tip) {
							var data = {
								msg: msg
							};
							if(range) {
								if(range.start != null) {
									data.start = range.start + leadingSpaceLength;
								}
								if(range.end != null) {
									data.end = range.end + leadingSpaceLength;
								}
							}
							(tip ? tips : errors).push(data);
						};
					}
					// merge custom modules
					if(options.modules) {
						finalOptions.modules =
							(baseOptions.modules || []).concat(options.modules);
					}
					// merge custom directives
					if(options.directives) {
						finalOptions.directives = extend(
							Object.create(baseOptions.directives || null),
							options.directives
						);
					}
					// copy other options
					for(var key in options) {
						if(key !== 'modules' && key !== 'directives') {
							finalOptions[key] = options[key];
						}
					}
				}

				finalOptions.warn = warn;

				var compiled = baseCompile(template.trim(), finalOptions); {
					detectErrors(compiled.ast, warn);
				}
				compiled.errors = errors;
				compiled.tips = tips;
				return compiled
			}

			return {
				compile: compile,
				compileToFunctions: createCompileToFunctionFn(compile)
			}
		}
	}

	/*  */

	// `createCompilerCreator` allows creating compilers that use alternative
	// parser/optimizer/codegen, e.g the SSR optimizing compiler.
	// Here we just export a default compiler using the default parts.
	var createCompiler = createCompilerCreator(function baseCompile(
		template,
		options
	) {
		var ast = parse(template.trim(), options);
		if(options.optimize !== false) {
			optimize(ast, options);
		}
		var code = generate(ast, options);
		return {
			ast: ast,
			render: code.render,
			staticRenderFns: code.staticRenderFns
		}
	});

	/*  */

	var ref$1 = createCompiler(baseOptions);
	var compile = ref$1.compile;
	var compileToFunctions = ref$1.compileToFunctions;

	/*  */

	// check whether current browser encodes a char inside attribute values
	var div;

	function getShouldDecode(href) {
		div = div || document.createElement('div');
		div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
		return div.innerHTML.indexOf('&#10;') > 0
	}

	// #3663: IE encodes newlines inside attribute values while other browsers don't
	var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
	// #6828: chrome encodes content in a[href]
	var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;

	/*  */

	var idToTemplate = cached(function(id) {
		var el = query(id);
		return el && el.innerHTML
	});

	var mount = Vue.prototype.$mount;
	Vue.prototype.$mount = function(
		el,
		hydrating
	) {
		el = el && query(el);

		/* istanbul ignore if */
		if(el === document.body || el === document.documentElement) {
			warn(
				"Do not mount Vue to <html> or <body> - mount to normal elements instead."
			);
			return this
		}

		var options = this.$options;
		// resolve template/el and convert to render function
		if(!options.render) {
			var template = options.template;
			if(template) {
				if(typeof template === 'string') {
					if(template.charAt(0) === '#') {
						template = idToTemplate(template);
						/* istanbul ignore if */
						if(!template) {
							warn(
								("Template element not found or is empty: " + (options.template)),
								this
							);
						}
					}
				} else if(template.nodeType) {
					template = template.innerHTML;
				} else {
					{
						warn('invalid template option:' + template, this);
					}
					return this
				}
			} else if(el) {
				template = getOuterHTML(el);
			}
			if(template) {
				/* istanbul ignore if */
				if(config.performance && mark) {
					mark('compile');
				}

				var ref = compileToFunctions(template, {
					outputSourceRange: "development" !== 'production',
					shouldDecodeNewlines: shouldDecodeNewlines,
					shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
					delimiters: options.delimiters,
					comments: options.comments
				}, this);
				var render = ref.render;
				var staticRenderFns = ref.staticRenderFns;
				options.render = render;
				options.staticRenderFns = staticRenderFns;

				/* istanbul ignore if */
				if(config.performance && mark) {
					mark('compile end');
					measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
				}
			}
		}
		return mount.call(this, el, hydrating)
	};

	/**
	 * Get outerHTML of elements, taking care
	 * of SVG elements in IE as well.
	 */
	function getOuterHTML(el) {
		if(el.outerHTML) {
			return el.outerHTML
		} else {
			var container = document.createElement('div');
			container.appendChild(el.cloneNode(true));
			return container.innerHTML
		}
	}

	Vue.compile = compileToFunctions;

	return Vue;

}));